@article{kemper_abdurazakov_freericks_2018, title={General Principles for the Nonequilibrium Relaxation of Populations in Quantum Materials}, volume={8}, ISSN={["2160-3308"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85055139503&partnerID=MN8TOARS}, DOI={10.1103/PhysRevX.8.041009}, abstractNote={We examine the problem of how excited populations of electrons relax after they have been excited by a pump. We include three of the most important relaxation processes: (i) impurity scattering; (ii) Coulomb scattering; and (iii) electron-phonon scattering. The relaxation of an excited population of electrons is one of the most fundamental processes measured in pump/probe experiments, but it is often not interpreted correctly. We show how to resolve four common and incorrect misconceptions about non-equilibrium relaxation that are pervasive in the field. The resolution of these misconceptions shows that non-equilibrium relaxation is more complex than previously thought, but it yields to recently developed theoretical methods in non-equilibrium theory. We focus much of the discussion on implications of these results for experiment.}, number={4}, journal={PHYSICAL REVIEW X}, publisher={American Physical Society (APS)}, author={Kemper, A. F. and Abdurazakov, O. and Freericks, J. K.}, year={2018}, month={Oct} }
 @article{konstantinova_rameau_reid_abdurazakov_wu_li_shen_gu_huang_rettig_et al._2018, title={Nonequilibrium electron and lattice dynamics of strongly correlated Bi2Sr2CaCu2O8+delta single crystals}, volume={4}, ISSN={["2375-2548"]}, url={https://doi.org/10.1126/sciadv.aap7427}, DOI={10.1126/sciadv.aap7427}, abstractNote={Both electron and lattice dynamics are directly observed in the nonequilibrium state of strongly correlated Bi-2212.}, number={4}, journal={SCIENCE ADVANCES}, publisher={American Association for the Advancement of Science (AAAS)}, author={Konstantinova, Tatiana and Rameau, Jonathan D. and Reid, Alexander H. and Abdurazakov, Omadillo and Wu, Lijun and Li, Renkai and Shen, Xiaozhe and Gu, Genda and Huang, Yuan and Rettig, Laurenz and et al.}, year={2018}, month={Apr} }
 @article{abdurazakov_nevola_rustagi_freericks_dougherty_kemper_2018, title={Nonequilibrium electron dynamics in pump-probe spectroscopy: Role of excited phonon populations}, volume={98}, ISSN={["2469-9969"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85058282950&partnerID=MN8TOARS}, DOI={10.1103/PhysRevB.98.245110}, abstractNote={We study the role of excited phonon populations in the relaxation rates of nonequilibrium electrons using a nonequilibrium Green's function formalism. The transient modifications in the phononic properties are accounted for by self-consistently solving the Dyson equation for the electron and phonon Green's functions. The pump-induced changes manifest in both the electronic and phononic spectral functions. We find that the excited phonon populations suppress the decay rates of nonequilibrium electrons due to enhanced phonon absorption. The increased phonon occupation also sets the nonequilibrium decay rates and the equilibrium scattering rates apart. The decay rates are found to be time dependent, and this is illustrated in the experimentally observed population decay of photoexcited ${\mathrm{Bi}}_{1.5}{\mathrm{Sb}}_{0.5}{\mathrm{Te}}_{1.7}{\mathrm{Se}}_{1.3}$.}, number={24}, journal={PHYSICAL REVIEW B}, publisher={American Physical Society (APS)}, author={Abdurazakov, O. and Nevola, D. and Rustagi, A. and Freericks, J. K. and Dougherty, D. B. and Kemper, A. F.}, year={2018}, month={Dec} }
 @inproceedings{freericks_abdurazakov_kemper_2017, place={Bellingham}, title={
Relaxation of nonequilibrium populations after a pump: the breaking of Mathiessen's rule
}, volume={10193}, url={http://dx.doi.org/10.1117/12.2261872}, DOI={10.1117/12.2261872}, abstractNote={From the early days of many-body physics, it was realized that the self-energy governs the relaxation or lifetime of the retarded Green’s function. So it seems reasonable to directly extend those results into the nonequilibrium domain. But experiments and calculations of the response of quantum materials to a pump show that the relationship between the relaxation and the self-energy only holds in special cases. Experimentally, the decay time for a population to relax back to equilibrium and the linewidth measured in a linear-response angle-resolved photoemission spectroscopy differ by large amounts. Theoretically, aside from the weak-coupling regime where the relationship holds, one also finds deviations and additionally one sees violations of Mathiessen’s rule. In this work, we examine whether looking at an effective transport relaxation time helps to analyze the decay times of excited populations as they relax back to equilibrium. We conclude that it may do a little better, but it has a fitting parameter for the overall scale which must be determined.}, booktitle={Ultrafast Bandgap Photonics II}, publisher={SPIE}, author={Freericks, J. K. and Abdurazakov, O. and Kemper, A. F.}, editor={Rafailov, Michael K.Editor}, year={2017}, month={May} }
 @article{afanasjev_abdurazakov_2013, title={Pairing and rotational properties of actinides and superheavy nuclei in covariant density functional theory}, volume={88}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84881186792&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.88.014320}, abstractNote={Department of Physics and Astronomy, Mississippi State University, MS 39762( Dated: January 11, 2014)The cranked relativistic Hartree-Bogoliubov (CRHB) theory has been applied for a systematicstudy of pairing and rotational properties of actinides and light superheavy nuclei. Pairing corre-lations are taken into account by the Brink-Booker part of finite range Gogny D1S force. For thefirst time in the covariant density functional theory (CDFT) framework the pairing properties arestudied via the quantities (such as three-point ∆}, number={1}, journal={Physical Review C - Nuclear Physics}, author={Afanasjev, A.V. and Abdurazakov, O.}, year={2013} }
 @article{nasirov_tahkhodzhaev_abdurazakov_2012, title={True ternary fission of <sup>236</sup>u: A sequential mechanism?}, volume={76}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84860858381&partnerID=MN8TOARS}, DOI={10.3103/S1062873812040259}, number={4}, journal={Bulletin of the Russian Academy of Sciences: Physics}, author={Nasirov, A.K. and Tahkhodzhaev, R.B. and Abdurazakov, O.O.}, year={2012}, pages={467–471} }