Lex Kemper
Kemper, A. F., Yang, C., & Gull, E. (2024). Denoising and Extension of Response Functions in the Time Domain. Physical Review Letters. https://doi.org/10.1103/PhysRevLett.132.160403
Re, L. D., Rost, B., Foss-Feig, M., Kemper, A. F., & Freericks, J. K. (2024). Robust Measurements of n -Point Correlation Functions of Driven-Dissipative Quantum Systems on a Digital Quantum Computer. Physical Review Letters. https://doi.org/10.1103/PhysRevLett.132.100601
Jabusch, N. J., Dayal, P., & Kemper, A. F. (2023). Catalogue of phonon modes in several cuprate high-temperature superconductors from density functional theory. SCIPOST PHYSICS CORE, 6(1). https://doi.org/10.21468/SciPostPhysCore.6.1.018
Scott, K., Kisiel, E., Boyle, T. J., Basak, R., Jargot, G., Das, S., … Neto, E. da S. H. (2023). Low-energy quasi-circular electron correlations with charge order wavelength in Bi2Sr2CaCu2O8+& delta; SCIENCE ADVANCES, 9(29). https://doi.org/10.1126/sciadv.adg3710
Steckmann, T., Keen, T., Kokcu, E., Kemper, A. F., Dumitrescu, E. F., & Wang, Y. (2023). Mapping the metal-insulator phase diagram by algebraically fast-forwarding dynamics on a cloud quantum computer. PHYSICAL REVIEW RESEARCH, 5(2). https://doi.org/10.1103/PhysRevResearch.5.023198
Yeter-Aydeniz, K., Parks, Z., Thekkiniyedath, A. N., Gustafson, E., Kemper, A. F., Pooser, R. C., … Dreher, P. (2023). Measuring qubit stability in a gate-based NISQ hardware processor. QUANTUM INFORMATION PROCESSING, 22(2). https://doi.org/10.1007/s11128-023-03826-4
Mejuto-Zaera, C., & Kemper, A. F. (2023). Quantum eigenvector continuation for chemistry applications. ELECTRONIC STRUCTURE, 5(4). https://doi.org/10.1088/2516-1075/ad018f
Camps, D., Kokcou, E., Bassman, L., De Jong, W. A., Kemper, A. E., & Van Beeumen, R. (2022). AN ALGEBRAIC QUANTUM CIRCUIT COMPRESSION ALGORITHM FOR HAMILTONIAN SIMULATION. SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS, 43(3), 1084–1108. https://doi.org/10.1137/21m1439298
Kokcu, E., Camps, D., Bassman, L., Freericks, J. K., Jong, W. A., Van Beeumen, R., & Kemper, A. F. (2022). Algebraic compression of quantum circuits for Hamiltonian evolution. PHYSICAL REVIEW A, 105(3). https://doi.org/10.1103/PhysRevA.105.032420
Data for "Quantum computation of magnon spectra". (2022, August 31). Open Science Framework. https://doi.org/10.17605/osf.io/9gx7u
Francis, A., Zelleke, E., Zhang, Z., Kemper, A. F., & Freericks, J. K. (2022). Determining Ground-State Phase Diagrams on Quantum Computers via a Generalized Application of Adiabatic State Preparation. SYMMETRY-BASEL, 14(4). https://doi.org/10.3390/sym14040809
Wandel, S., Boschini, F., Neto, E. H. da S., Shen, L., Na, M. X., Zohar, S., … Coslovich, G. (2022). Enhanced charge density wave coherence in a light-quenched, high-temperature superconductor. SCIENCE, 376(6595), 860-+. https://doi.org/10.1126/science.abd7213
Koekcue, E., Steckmann, T., Wang, Y., Freericks, J. K., Dumitrescu, E. F., & Kemper, A. F. (2022). Fixed Depth Hamiltonian Simulation via Cartan Decomposition. PHYSICAL REVIEW LETTERS, 129(7). https://doi.org/10.1103/PhysRevLett.129.070501
Na, M. X., Boschini, F., Mills, A. K., Michiardi, M., Day, R. P., Zwartsenberg, B., … Damascelli, A. (2022). Mapping non-thermal regimes in pump-probe electron relaxation dynamics. The International Conference on Ultrafast Phenomena (UP) 2022. https://doi.org/10.1364/up.2022.tu2a.5
Metcalf, M., Stone, E., Klymko, K., Kemper, A. F., Sarovar, M., & Jong, W. A. (2022). Quantum Markov chain Monte Carlo with digital dissipative dynamics on quantum computers. QUANTUM SCIENCE AND TECHNOLOGY, 7(2). https://doi.org/10.1088/2058-9565/ac546a
Uzsoy, A. S. M., Zareiesfandabadi, P., Jennings, J., Kemper, A. F., & Elting, M. W. (2021, July 8). Automated tracking of S. pombe spindle elongation dynamics. JOURNAL OF MICROSCOPY, Vol. 6. https://doi.org/10.1111/jmi.13044
Bridging the Gap Between the Transient and the Steady State of a Nonequilibrium Quantum System. (2021, January 4).
Cong, K., Vetter, E., Yan, L., Li, Y., Zhang, Q., Xiong, Y., … Sun, D. (2021). Coherent control of asymmetric spintronic terahertz emission from two-dimensional hybrid metal halides. NATURE COMMUNICATIONS, 12(1). https://doi.org/10.1038/s41467-021-26011-6
Na, M. X., Boschini, F., Mills, A. K., Michiardi, M., Day, R. P., Zwartsenberg, B., … Damascelli, A. (2021). Evolution of nonthermal electrons in pump-probe electron relaxation dynamics. Conference on Lasers and Electro-Optics. https://doi.org/10.1364/cleo_qels.2021.fw4k.1
Wilmington, R. L., Ardekani, H., Rustagi, A., Bataller, A., Kemper, A. F., Younts, R. A., & Gundogdu, K. (2021). Fermi liquid theory sheds light on hot electron-hole liquid in 1L-MoS2. PHYSICAL REVIEW B, 103(7). https://doi.org/10.1103/PhysRevB.103.075416
Fixed Depth Hamiltonian Simulation via Cartan Decomposition. (2021, April 1).
Huang, J., Wang, Z., Pang, H., Wu, H., Cao, H., Mo, S.-K., … Birgeneau, R. J. (2021). Flat-band-induced itinerant ferromagnetism in RbCo2Se2. PHYSICAL REVIEW B, 103(16). https://doi.org/10.1103/PhysRevB.103.165105
Flatband-Induced Itinerant Ferromagnetism in RbCo$_2$Se$_2$. (2021, March 11).
Francis, A., Zhu, D., Alderete, C. H., Johri, S., Xiao, X., Freericks, J. K., … Kemper, A. F. (2021). Many-body thermodynamics on quantum computers via partition function zeros. SCIENCE ADVANCES, 7(34). https://doi.org/10.1126/sciadv.abf2447
Zhou, F., Williams, J., Sun, S., Malliakas, C. D., Kanatzidis, M. G., Kemper, A. F., & Ruan, C.-Y. (2021). Nonequilibrium dynamics of spontaneous symmetry breaking into a hidden state of charge-density wave. NATURE COMMUNICATIONS, 12(1). https://doi.org/10.1038/s41467-020-20834-5
Paris, E., Nicholson, C. W., Johnston, S., Tseng, Y., Rumo, M., Coslovich, G., … Schmitt, T. (2021). Probing the interplay between lattice dynamics and short-range magnetic correlations in CuGeO3 with femtosecond RIXS. NPJ QUANTUM MATERIALS, 6(1). https://doi.org/10.1038/s41535-021-00350-5
Huang, H. Y., Singh, A., Mou, C. Y., Johnston, S., Kemper, A. F., Brink, J., … Huang, D. J. (2021). Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate. PHYSICAL REVIEW X, 11(4). https://doi.org/10.1103/PhysRevX.11.041038
Pellatz, N., Roy, S., Lee, J.-W., Schad, J. L., Kandel, H., Arndt, N., … Reznik, D. (2021). Relaxation timescales and electron-phonon coupling in optically pumped YBa2Cu3O6+x revealed by time-resolved Raman scattering. PHYSICAL REVIEW B, 104(18). https://doi.org/10.1103/PhysRevB.104.L180505
Robust measurement of wave function topology on NISQ quantum computers. (2021, January 18).
Bassman, L., Urbanek, M., Metcalf, M., Carter, J., Kemper, A. F., & Jong, W. A. (2021). [Review of Simulating quantum materials with digital quantum computers]. QUANTUM SCIENCE AND TECHNOLOGY, 6(4). https://doi.org/10.1088/2058-9565/ac1ca6
Nevola, D., Bataller, A., Kumar, A., Sridhar, S., Frick, J., O'Donnell, S., … Dougherty, D. B. (2021). Timescales of excited state relaxation in alpha-RuCl3 observed by time-resolved two-photon photoemission spectroscopy. PHYSICAL REVIEW B, 103(24). https://doi.org/10.1103/PhysRevB.103.245105
Freericks, J. K., & Kemper, A. F. (2021). What do the two times in two-time correlation functions mean for interpreting tr-ARPES? JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 251. https://doi.org/10.1016/j.elspec.2021.147104
Uzsoy Ana Sofı́a M., Zareiesfandabadi, P., Jennings, J., Kemper, A. F., & Elting, M. W. (2020, October 10). Automated tracking of S. pombe spindle elongation dynamics. [], Vol. 10. https://doi.org/10.1101/2020.10.09.333765
Catalogue of phonon modes in several cuprate high-temperature superconductors from density functional theory. (2020, October 20).
Na, M., Mills, A. K., Boschini, F., Michiardi, M., Nosarzewski, B., Day, R. P., … Damascelli, A. (2020). Determination of mode-projected electron-phonon coupling from time-domain observations of microscopic scattering processes. The 22nd International Conference on Ultrafast Phenomena 2020. https://doi.org/10.1364/up.2020.m3b.2
Re, L. D., Rost, B., Kemper, A. F., & Freericks, J. K. (2020). Driven-dissipative quantum mechanics on a lattice: Simulating a fermionic reservoir on a quantum computer. Physical Review B, 102(12). https://doi.org/10.1103/PhysRevB.102.125112
Establishing non-thermal regimes in pump-probe electron-relaxation dynamics. (2020, September 10).
Na, M. X., Boschini, F., Mills, A. K., Michiardi, M., Day, R. P., Zwartsenberg, B., … Damascelli, A. (2020). Establishing nonthermal regimes in pump-probe electron relaxation dynamics. Physical Review B, 102(18). https://doi.org/10.1103/PhysRevB.102.184307
Fermi Liquid Theory Sheds Light on "Hot" EHL in 1L-MoS$_2$. (2020, October 19).
Light-enhanced Charge Density Wave Coherence in a High-Temperature Superconductor. (2020, March 9).
Many Body Thermodynamics on Quantum Computers via Partition Function Zeros. (2020, September 10).
Observing coherences with time-resolved photoemission. (2020, May 18).
Francis, A., Freericks, J. K., & Kemper, A. F. (2020). Quantum computation of magnon spectra. PHYSICAL REVIEW B, 101(1). https://doi.org/10.1103/PhysRevB.101.014411
Topological Quantum Computing on a Conventional Quantum Computer. (2020, June 9).
Band-Resolved Imaging of Photocurrent in a Topological Insulator. (2019). https://doi.org/10.1103/physrevlett.122.167401
Rustagi, A., & Kemper, A. F. (2019). Coherent Excitonic Quantum Beats in Time-Resolved Photoemission Measurements. Physical Review B, 99(12). https://doi.org/10.1103/PhysRevB.99.125303
Bataller, A. W., Younts, R. A., Rustagi, A., Yu, Y., Ardekani, H., Kemper, A., … Gundogdu, K. (2019). Correction to Dense Electron–Hole Plasma Formation and Ultralong Charge Lifetime in Monolayer MoS2 via Material Tuning. Nano Letters, 19(7), 4816–4816. https://doi.org/10.1021/acs.nanolett.9b02578
Bataller, A. W., Younts, R. A., Rustagi, A., Yu, Y., Ardekani, H., Kemper, A., … Gundogdu, K. (2019). Dense Electron–Hole Plasma Formation and Ultralong Charge Lifetime in Monolayer MoS2 via Material Tuning. Nano Letters, 19(2), 1104–1111. https://doi.org/10.1021/acs.nanolett.8b04408
Pfau, H., Rotundu, C. R., Palmstrom, J. C., Chen, S. D., Hashimoto, M., Lu, D., … Shen, Z.-X. (2019). Detailed band structure of twinned and detwinned
BaFe2As2
studied with angle-resolved photoemission spectroscopy. Physical Review B, 99(3). https://doi.org/10.1103/physrevb.99.035118
Na, M. X., Mills, A. K., Boschini, F., Michiardi, M., Nosarzewski, B., Day, R. P., … Damascelli, A. (2019). Direct determination of mode-projected electron-phonon coupling in the time domain. SCIENCE, 366(6470), 1231-+. https://doi.org/10.1126/science.aaw1662
Kumar, A., & Kemper, A. F. (2019). Higgs oscillations in time-resolved optical conductivity. PHYSICAL REVIEW B, 100(17). https://doi.org/10.1103/PhysRevB.100.174515
Kumar, A., Johnston, S., & Kemper, A. F. (2019). Identifying a forward-scattering superconductor through pump-probe spectroscopy. EPL (Europhysics Letters), 124(6), 67002. https://doi.org/10.1209/0295-5075/124/67002
Kung, H.-H., Goyal, A. P., Maslov, D. L., Wang, X., Lee, A., Kemper, A. F., … Blumberg, G. (2019). Observation of chiral surface excitons in a topological insulator Bi2Se3. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 116(10), 4006–4011. https://doi.org/10.1073/pnas.1813514116
Revelle, J. P., Kumar, A., & Kemper, A. F. (2019). Theory of Time-Resolved Optical Conductivity of Superconductors: Comparing Two Methods for Its Evaluation. CONDENSED MATTER, 4(3). https://doi.org/10.3390/condmat4030079
Coslovich, G., Huber, B., Behl, S., Kemper, A. F., Sasagawa, T., Bechtel, H. A., … Kaindl, R. A. (2019). Ultrafast multi-terahertz probes of symmetry breaking in a stripe-phase correlated oxide. TERAHERTZ EMITTERS, RECEIVERS, AND APPLICATIONS IX, Vol. 10756. https://doi.org/10.1117/12.2322682
Topp, G. E., Tancogne-Dejean, N., Kemper, A. F., Rubio, A., & Sentef, M. A. (2018). All-optical nonequilibrium pathway to stabilising magnetic Weyl semimetals in pyrochlore iridates. NATURE COMMUNICATIONS, 9(1). https://doi.org/10.1038/s41467-018-06991-8
Cilento, F., Manzoni, G., Sterzi, A., Peli, S., Ronchi, A., Crepaldi, A., … Parmigiani, F. (2018). Dynamics of correlation-frozen antinodal quasiparticles in superconducting cuprates. Science Advances, 4(2), 7. https://doi.org/10.1126/sciadv.aar1998
Kemper, A. F., Abdurazakov, O., & Freericks, J. K. (2018). General Principles for the Nonequilibrium Relaxation of Populations in Quantum Materials. PHYSICAL REVIEW X, 8(4). https://doi.org/10.1103/physrevx.8.041009
Chen, T., Ahmadi-Majlan, K., Lim, Z. H., Zhang, Z., Ngai, J. H., Kemper, A. F., & Kumah, D. P. (2018). Interfacial structure of SrZrxTi1−xO3 films on Ge. Applied Physics Letters, 113(20), 201601. https://doi.org/10.1063/1.5046394
Konstantinova, T., Rameau, J. D., Reid, A. H., Abdurazakov, O., Wu, L., Li, R., … Zhu, Y. (2018). Nonequilibrium electron and lattice dynamics of strongly correlated Bi2Sr2CaCu2O8+delta single crystals. SCIENCE ADVANCES, 4(4). https://doi.org/10.1126/sciadv.aap7427
Abdurazakov, O., Nevola, D., Rustagi, A., Freericks, J. K., Dougherty, D. B., & Kemper, A. F. (2018). Nonequilibrium electron dynamics in pump-probe spectroscopy: Role of excited phonon populations. PHYSICAL REVIEW B, 98(24). https://doi.org/10.1103/physrevb.98.245110
Rustagi, A., & Kemper, A. F. (2018). Photoemission signature of excitons. PHYSICAL REVIEW B, 97(23). https://doi.org/10.1103/physrevb.97.235310
Yi, M., Frano, A., Lu, D. H., He, Y., Wang, M., Frandsen, B. A., … Birgeneau, R. J. (2018). Spectral Evidence for Emergent Order in
Ba1−xNaxFe2As2. Physical Review Letters, 121(12). https://doi.org/10.1103/physrevlett.121.127001
Rustagi, A., & Kemper, A. F. (2018). Theoretical Phase Diagram for the Room-Temperature Electron-Hole Liquid in Photoexcited Quasi-Two-Dimensional Monolayer MoS2. NANO LETTERS, 18(1), 455–459. https://doi.org/10.1021/acs.nanolett.7b04377
Freericks, J. K., Abdurazakov, O., & Kemper, A. F. (2017).
Relaxation of nonequilibrium populations after a pump: the breaking of Mathiessen's rule
. In M. K. Rafailov (Ed.), Ultrafast Bandgap Photonics II (Vol. 10193). https://doi.org/10.1117/12.2261872
Nosarzewski, B., Moritz, B., Freericks, J. K., Kemper, A. F., & Devereaux, T. P. (2017). Amplitude mode oscillations in pump-probe photoemission spectra from a d-wave superconductor. PHYSICAL REVIEW B, 96(18). https://doi.org/10.1103/physrevb.96.184518
Hübener, H., Sentef, M. A., Giovannini, U. D., Kemper, A. F., & Rubio, A. (2017). Creating stable Floquet–Weyl semimetals by laser-driving of 3D Dirac materials. Nature Communications, 8, 13940. https://doi.org/10.1038/ncomms13940
Creating stable Floquet–Weyl semimetals by laser-driving of 3D Dirac materials. (2017). Deutsches Elektronen-Synchrotron, DESY, Hamburg. https://doi.org/10.3204/pubdb-2017-10018
Hubener, H., Sentef, M. A., De Giovannini, U., Kemper, A. F., & Rubio, A. (2017). Creating stable floquet-weyl semimetals by laser-driving of 3d dirac materials. Nature Communications, 8.
Kemper, A. F., Sentef, M. A., Moritz, B., Devereaux, T. P., & Freericks, J. K. (2017). Review of the Theoretical Description of Time‐Resolved Angle‐Resolved Photoemission Spectroscopy in Electron‐Phonon Mediated Superconductors. Annalen Der Physik, 7(9), 1600235. https://doi.org/10.1002/andp.201600235
Kung, H.-H., Salehi, M., Boulares, I., Kemper, A. F., Koirala, N., Brahlek, M., … Blumberg, G. (2017). Surface vibrational modes of the topological insulator Bi2Se3 observed by Raman spectroscopy. PHYSICAL REVIEW B, 95(24). https://doi.org/10.1103/physrevb.95.245406
Kemper, A. F., Krishnamurthy, H. R., & Freericks, J. K. (2017). The role of average time dependence on the relaxation of excited electron populations in nonequilibrium many-body physics. Fortschritte Der Physik-Progress of Physics, 65(6-8), 8. https://doi.org/10.1002/prop.201600042
Kemper, A. F., Krishnamurthy, H. R., & Freericks, J. K. (2017). The role of average time dependence on the relaxation of excited electron populations in nonequilibrium many-body physics. Fortschritte Der Physik-Progress of Physics, 65(6-8).
Coslovich, G., Kemper, A. F., Behl, S., Huber, B., Bechtel, H. A., Sasagawa, T., … Kaindl, R. A. (2017). Ultrafast dynamics of vibrational symmetry breaking in a charge-ordered nickelate. Science Advances, 3(11). https://doi.org/10.1126/sciadv.1600735
Rameau, J. D., Freutel, S., Kemper, A. F., Sentef, M. A., Freericks, J. K., Avigo, I., … Bovensiepen, U. (2016). Energy dissipation from a correlated system driven out of equilibrium. Nature Communications, 7, 13761. https://doi.org/10.1038/ncomms13761
Kemper, A., & Freericks, J. (2016). Relationship between Population Dynamics and the Self-Energy in Driven Non-Equilibrium Systems. Entropy, 18(5), 180. https://doi.org/10.3390/e18050180
Jozwiak, C., Sobota, J. A., Gotlieb, K., Kemper, A. F., Rotundu, C. R., Birgeneau, R. J., … al. (2016). Spin-polarized surface resonances accompanying topological surface state formation. Nature Communications, 7(1), 13143. https://doi.org/10.1038/ncomms13143
Hinton, J. P., Thewalt, E., Alpichshev, Z., Mahmood, F., Koralek, J. D., Chan, M. K., … Orenstein, J. (2016). The rate of quasiparticle recombination probes the onset of coherence in cuprate superconductors. Sci. Rep., 6, 23610. https://doi.org/10.1038/srep23610
Sentef, M. A., Kemper, A. F., Georges, A., & Kollath, C. (2016). Theory of light-enhanced phonon-mediated superconductivity. PHYSICAL REVIEW B, 93(14). https://doi.org/10.1103/physrevb.93.144506
Moore, R. G., Lee, W. S., Kirchman, P. S., Chuang, Y. D., Kemper, A. F., Trigo, M., … Shen, Z.-X. (2016). Ultrafast resonant soft x-ray diffraction dynamics of the charge density wave in TbTe 3. Phys. Rev. B, 93(2). https://doi.org/10.1103/physrevb.93.024304
Yi, M., Wang, M., Kemper, A. F., Mo, S.-K., Hussain, Z., Bourret-Courchesne, E., … Birgeneau, R. J. (2015). Bandwidth and Electron Correlation-Tuned Superconductivity in Rb 0.8 Fe 2 ( Se 1 − z S z ) 2. Phys. Rev. Lett., 115(25). https://doi.org/10.1103/physrevlett.115.256403
Leuenberger, D., Sobota, J. A., Yang, S.-L., Kemper, A. F., Giraldo-Gallo, P., Moore, R. G., … Shen, Z.-X. (2015). Classification of collective modes in a charge density wave by momentum-dependent modulation of the electronic band structure. Phys. Rev. B, 91(20). https://doi.org/10.1103/physrevb.91.201106
Gerber, S., Kim, K. W., Zhang, Y., Zhu, D., Plonka, N., Yi, M., … Lee, W.-S. (2015). Direct characterization of photoinduced lattice dynamics in BaFe2As2. Nat Comms, 6, 7377. https://doi.org/10.1038/ncomms8377
Kemper, A. F., Sentef, M. A., Moritz, B., Freericks, J. K., & Devereaux, T. P. (2015). Direct observation of Higgs mode oscillations in the pump-probe photoemission spectra of electron-phonon mediated superconductors. PHYSICAL REVIEW B, 92(22). https://doi.org/10.1103/physrevb.92.224517
Arenas, D. J., Middleton, C., & Kemper, A. F. (2015). First-principles study of the phonon modes in bismuth sillenites. Phys. Rev. B, 91(14). https://doi.org/10.1103/physrevb.91.144103
Liu, F., Lin, L., Vigil-Fowler, D., Lischner, J., Kemper, A. F., Sharifzadeh, S., … Louie, S. G. (2015). Numerical integration for ab initio many-electron self energy calculations within the GW approximation. Journal of Computational Physics, 286, 1–13. https://doi.org/10.1016/j.jcp.2015.01.023
Langner, M. C., Roy, S., Kemper, A. F., Chuang, Y.-D., Mishra, S. K., Versteeg, R. B., … Schoenlein, R. W. (2015). Scattering bottleneck for spin dynamics in metallic helical antiferromagnetic dysprosium. Phys. Rev. B, 92(18). https://doi.org/10.1103/physrevb.92.184423
Sentef, M. A., Claassen, M., Kemper, A. F., Moritz, B., Oka, T., Freericks, J. K., & Devereaux, T. P. (2015). Theory of Floquet band formation and local pseudospin textures in pump-probe photoemission of graphene. Nat Comms, 6, 7047. https://doi.org/10.1038/ncomms8047
Yang, S., Sobota, J. A., Leuenberger, D., Kemper, A. F., Lee, J. J., Schmitt, F. T., … Shen, Z.-X. (2015). Thickness-Dependent Coherent Phonon Frequency in Ultrathin FeSe/SrTiO 3 Films. Nano Lett., 15(6), 4150–4154. https://doi.org/10.1021/acs.nanolett.5b01274
Langner, M., Roy, S., Kemper, A. F., Chuang, Y.-D., Mishra, S., Versteeg, R. B., … Schoenlein, R. W. (2015). Transient Exchange Interaction in a Helical Antiferromagnet. CLEO: 2015. Presented at the CLEO: QELS_Fundamental Science. https://doi.org/10.1364/cleo_qels.2015.ftu1b.6
Langner, M. C., Roy, S., Kemper, A. F., Chuang, Y. D., Misra, S. K., Versteeg, R. B., … Ieee. (2015). Transient Exchange Interaction in a Helical Antiferromagnet. In 2015 Conference on Lasers and Electro-Optics. Retrieved from http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000370627100375&KeyUID=WOS:000370627100375
Eiter, H.-M., Lavagnini, M., Hackl, R., Nowadnick, E. A., Kemper, A. F., Devereaux, T. P., … al. (2014). Balancing Act: Evidence for a Strong Subdominant d -Wave Pairing Channel in Ba 0.6 K 0.4 Fe 2 As 2. Phys. Rev. X, 4(4), 64–69. https://doi.org/10.1103/physrevx.4.041046
Wang, S., Kemper, A. F., Baldini, M., Shapiro, M. C., Riggs, S. C., Zhao, Z., … Mao, W. L. (2014). Bandgap closure and reopening in at high pressure. Phys. Rev. B, 89(24). https://doi.org/10.1103/physrevb.89.245109
Sobota, J. A., Yang, S.-L., Leuenberger, D., Kemper, A. F., Analytis, J. G., Fisher, I. R., … Shen, Z.-X. (2014). Distinguishing Bulk and Surface Electron-Phonon Coupling in the Topological Insulator Using Time-Resolved Photoemission Spectroscopy. Phys. Rev. Lett., 113(15). https://doi.org/10.1103/physrevlett.113.157401
Yi, M., Zhang, Y., Liu, Z.-K., Ding, X., Chu, J.-H., Kemper, A. F., … Lu, D. H. (2014). Dynamic competition between spin-density wave order and superconductivity in underdoped Ba1−xKxFe2As2. Nat Comms, 5. https://doi.org/10.1038/ncomms4711
Kemper, A. F., Sentef, M. A., Moritz, B., Freericks, J. K., & Devereaux, T. P. (2014). Effect of dynamical spectral weight redistribution on effective interactions in time-resolved spectroscopy. Phys. Rev. B, 90(7). https://doi.org/10.1103/physrevb.90.075126
Shen, W., Kemper, A. F., Devereaux, T. P., & Freericks, J. K. (2014). Exact solution for high harmonic generation and the response to an ac driving field for a charge density wave insulator. Phys. Rev. B, 90(11). https://doi.org/10.1103/physrevb.90.115113
Kang, J., Kemper, A. F., & Fernandes, R. M. (2014). Manipulation of Gap Nodes by Uniaxial Strain in Iron-Based Superconductors. Phys. Rev. Lett., 113(21). https://doi.org/10.1103/physrevlett.113.217001
Freericks, J. K., Najafi, K., Kemper, A. F., & Devereaux, T. P. (2014). Nonequilibrium sum rules for the Holstein model. Conference Proceedings for FEIS 2013. Presented at the FEIS 2013. Retrieved from arXiv:1403.5604
Kemper, A. F., Sentef, M. A., Moritz, B., Freericks, J. K., & Devereaux, T. P. (2014). Publisher's Note: Effect of dynamical spectral weight redistribution on effective interactions in time-resolved spectroscopy [Phys. Rev. B 90, 075126 (2014)]. Phys. Rev. B, 90(7). https://doi.org/10.1103/physrevb.90.079905
Sobota, J. A., Yang, S.-L., Leuenberger, D., Kemper, A. F., Analytis, J. G., Fisher, I. R., … Shen, Z.-X. (2014). Ultrafast electron dynamics in the topological insulator Bi2Se3 studied by time-resolved photoemission spectroscopy. Journal of Electron Spectroscopy and Related Phenomena, 195, 249–257. https://doi.org/10.1016/j.elspec.2014.01.005
Eiter, H.-M., Lavagnini, M., Hackl, R., Nowadnick, E. A., Kemper, A. F., Devereaux, T. P., … Degiorgi, L. (2013). Alternative route to charge density wave formation in multiband systems. PNAS, 110(1), 64–69. https://doi.org/10.1073/pnas.1214745110
Sobota, J. A., Yang, S. L., Kemper, A. F., Lee, J. J., Schmitt, F. T., Li, W., … Shen, Z. X. (2013). Direct Optical Coupling to an Unoccupied Dirac Surface State in the Topological Insulator Bi_{2}Se_{3}. Physical Review Letters, 111(13), 5. https://doi.org/10.1103/physrevlett.111.136802
Moritz, B., Kemper, A. F., Sentef, M., Devereaux, T. P., & Freericks, J. K. (2013). Electron-Mediated Relaxation Following Ultrafast Pumping of Strongly Correlated Materials: Model Evidence of a Correlation-Tuned Crossover between Thermal and Nonthermal States. Physical Review Letters, 111(7). https://doi.org/10.1103/physrevlett.111.077401
Sentef, M., Kemper, A., Moritz, B., Freericks, J., Shen, Z.-X., & Devereaux, T. (2013). Examining Electron-Boson Coupling Using Time-Resolved Spectroscopy. Physical Review X, 3(4). https://doi.org/10.1103/physrevx.3.041033
Rana, K. G., Yajima, T., Parui, S., Kemper, A. F., Devereaux, T. P., Hikita, Y., … Banerjee, T. (2013). Hot electron transport in a strongly correlated transition-metal oxide. Sci. Rep., 3. https://doi.org/10.1038/srep01274
Lee, Y. S., Moon, S. J., Riggs, S. C., Shapiro, M. C., Fisher, I. R., Fulfer, B. W., … Basov, D. N. (2013). Infrared study of the electronic structure of the metallic pyrochlore iridate Bi_{2}Ir_{2}O_{7}. Phys. Rev. B, 87(19), 7. https://doi.org/10.1103/physrevb.87.195143
Kemper, A. F., Sentef, M., Moritz, B., Kao, C. C., Shen, Z. X., Freericks, J. K., & Devereaux, T. P. (2013). Mapping of unoccupied states and relevant bosonic modes via the time-dependent momentum distribution. Phys. Rev. B, 87(23). https://doi.org/10.1103/physrevb.87.235139
Hamdan, R., Kemper, A. F., Cao, C., & Cheng, H. P. (2013). Structure and functionality of bromine doped graphite. J. Chem. Phys., 138(16), 164702. https://doi.org/10.1063/1.4801786
Kemper, A. F., Moritz, B., Freericks, J. K., & Devereaux, T. P. (2013). Theoretical description of high-order harmonic generation in solids. New Journal of Physics, 15(2), 023003. https://doi.org/10.1088/1367-2630/15/2/023003
Kung, Y. F., Lee, W.-S., Chen, C.-C., Kemper, A. F., Sorini, A. P., Moritz, B., & Devereaux, T. P. (2013). Time-dependent charge-order and spin-order recovery in striped systems. Phys. Rev. B, 88(12). https://doi.org/10.1103/physrevb.88.125114
Plonka, N., Kemper, A. F., Graser, S., Kampf, A. P., & Devereaux, T. P. (2013). Tunneling spectroscopy for probing orbital anisotropy in iron pnictides. Phys. Rev. B, 88(17). https://doi.org/10.1103/physrevb.88.174518
Srivastava, M. K., Wang, Y., Kemper, A. F., & Cheng, H.-P. (2012). Density functional study of gold and iron clusters on perfect and defected graphene. Phys. Rev. B, 85(16). https://doi.org/10.1103/physrevb.85.165444
Lee, W. S., Chuang, Y. D., Moore, R. G., Zhu, Y., Patthey, L., Trigo, M., … al. (2012). Phase fluctuations and the absence of topological defects in a photo-excited charge-ordered nickelate. Nature Communications, 3, 838. https://doi.org/10.1038/ncomms1837
Freericks, J. K., Liu, A. Y., Kemper, A. F., & Devereaux, T. P. (2012). Pulsed high harmonic generation of light due to pumped Bloch oscillations in noninteracting metals. Phys. Scr., T151, 014062. https://doi.org/10.1088/0031-8949/2012/t151/014062
Kemper, A. F., Korshunov, M. M., Devereaux, T. P., Fry, J. N., Cheng, H.-P., & Hirschfeld, P. J. (2011). Anisotropic quasiparticle lifetimes in Fe-based superconductors. Phys. Rev. B, 83(18). https://doi.org/10.1103/physrevb.83.184516
Yi, M., Lu, D., Chu, J.-H., Analytis, J. G., Sorini, A. P., Kemper, A. F., … al. (2011). Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition. Proceedings of the National Academy of Sciences, 108(17), 6878â6883. https://doi.org/10.1073/pnas.1015572108
Chen, C.-C., Jia, C. J., Kemper, A. F., Singh, R. R. P., & Devereaux, T. P. (2011). Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides. Physical Review Letters, 106(6). https://doi.org/10.1103/physrevlett.106.067002
Kemper, A. F., Cao, C., Hirschfeld, P. J., & Cheng, H.-P. (2010). Erratum: Effects of cobalt doping and three-dimensionality in BaFe_{2}As_{2} [Phys. Rev. B 80, 104511 (2009)]. Phys. Rev. B, 81(22). https://doi.org/10.1103/physrevb.81.229902
Kemper, A. F., Maier, T. A., Graser, S., Cheng, H.-P., Hirschfeld, P. J., & Scalapino, D. J. (2010). Sensitivity of the superconducting state and magnetic susceptibility to key aspects of electronic structure in ferropnictides. New Journal of Physics, 12(7), 073030. https://doi.org/10.1088/1367-2630/12/7/073030
Graser, S., Kemper, A. F., Maier, T. A., Cheng, H.-P., Hirschfeld, P. J., & Scalapino, D. J. (2010). Spin fluctuations and superconductivity in a three-dimensional tight-binding model for BaFe_{2}As_{2}. Phys. Rev. B, 81(21). https://doi.org/10.1103/physrevb.81.214503
Kemper, A. F., Cheng, H.-P., Kébaïli, N., Benrezzak, S., Schmidt, M., Masson, A., & Bréchignac, C. (2009). Curvature effect on the interaction between folded graphitic surface and silver clusters. Phys. Rev. B, 79(19). https://doi.org/10.1103/physrevb.79.193403
Kemper, A., Cao, C., Hirschfeld, P., & Cheng, H.-P. (2009). Effects of cobalt doping and three-dimensionality in BaFe2As2. Phys. Rev. B, 80(10). https://doi.org/10.1103/physrevb.80.104511
Kemper, A., Doluweera, D., Maier, T., Jarrell, M., Hirschfeld, P., & Cheng, H.-P. (2009). Insensitivity of d-wave pairing to disorder in the high-temperature cuprate superconductors. Phys. Rev. B, 79(10). https://doi.org/10.1103/physrevb.79.104502
Cao, C., Kemper, A., Agapito, L., Zhang, J.-W., He, Y., Rinzler, A., … Sanvito, S. (2009). Nonequilibrium Green’s function study of Pd4-cluster-functionalized carbon nanotubes as hydrogen sensors. Phys. Rev. B, 79(7). https://doi.org/10.1103/physrevb.79.075127