Divine Philip Kumah

A different facet to materials design

Nature Physics.

The Role of Interfacial Interactions and Oxygen Vacancies in Tuning Magnetic Anisotropy in LaCrO₃/LaMnO₃ Heterostructures

Zhang, X., Al-Tawhid, A. H., Schafer, P., Zhang, Z., & Kumah, D. P. (2024, July 23). ADVANCED MATERIALS INTERFACES, Vol. 7.

The role of interfacial interactions and oxygen vacancies in tuning magnetic anisotropy in LaCrO₃/LaMnO₃ heterostructures

ArXiv.

The structure of Ferroelectric BaBiO₃/BaTiO₃ Interfaces grown by Molecular Beam Epitaxy

ArXiv.

Tuning the interlayer coupling in La_0.7Sr_0.3Mn_0.95Ru_0.05O₃ / LaNiO₃ multilayers with perpendicular magnetic anisotropy

ArXiv.

Tuning the interlayer coupling in La_0.7Sr_0.3Mn_0.95Ru_0.05O₃/LaNiO₃ multilayers with perpendicular magnetic anisotropy

PHYSICAL REVIEW MATERIALS, 8(9).

Anisotropic superconductivity at KTaO3(111) interfaces

SCIENCE ADVANCES, 9(7).

Enhanced Critical Field of Superconductivity at an Oxide Interface

Al-Tawhid, A. H. H., Poage, S. J. J., Salmani-Rezaie, S., Gonzalez, A., Chikara, S., Muller, D. A. A., … Ahadi, K. (2023, July 27). NANO LETTERS, Vol. 7.

Enhanced Critical Field of Superconductivity at an Oxide Interface

ArXiv.

Ferroelectric Domain Wall Engineering Enables Thermal Modulation in PMN-PT Single Crystals

Negi, A., Kim, H. P., Hua, Z., Timofeeva, A., Zhang, X., Zhu, Y., … Liu, J. (2023, April 27). ADVANCED MATERIALS, Vol. 4.

In Situ Scattering Studies of Superconducting Vacancy-Ordered Monoclinic TiO Thin Films

ADVANCED PHYSICS RESEARCH, 3(3).

In-situ scattering studies of superconducting vacancy-ordered monoclinic TiO thin films

ArXiv.

The Role of Carbon Content: A Comparison of the Nickel Particle Size and Magnetic Property of Nickel/Polysiloxane-Derived Silicon Oxycarbide

Yang, N., Zhang, X., Reynolds, L., Kumah, D., & Xu, C. (2023, January 24). ADVANCED ENGINEERING MATERIALS, Vol. 1.

Thermal Conductivity of Barium Bismuthate at Low Temperatures

New Physics: Sae Mulli, 73(12), 1183–1188.

Thermal conductivity of Barium Bismuthate at low temperatures

ArXiv.

Thickness-Dependent Thermal Conductivity and Phonon Mean Free Path Distribution in Single-Crystalline Barium Titanate

Negi, A., Rodriguez, A., Zhang, X., Comstock, A. H. H., Yang, C., Sun, D., … Liu, J. (2023, April 24). ADVANCED SCIENCE, Vol. 4.

Oxygen Vacancy-Induced Anomalous Hall Effect in a Nominally Non-magnetic Oxide

Al-Tawhid, A. H., Kanter, J., Hatefipour, M., Irving, D. L., Kumah, D. P., Shabani, J., & Ahadi, K. (2022, September 24). JOURNAL OF ELECTRONIC MATERIALS, Vol. 9.

Superconducting Phase of Ti_xO_y Thin Films Grown by Molecular Beam Epitaxy

ArXiv.

Superconducting phase of TixOy thin films grown by molecular beam epitaxy

PHYSICAL REVIEW MATERIALS, 6(6).

Superconductivity and Weak Anti-localization at KTaO3 (111) Interfaces

Al-Tawhid, A. H., Kanter, J., Hatefipour, M., Kumah, D. P., Shabani, J., & Ahadi, K. (2022, August 19). JOURNAL OF ELECTRONIC MATERIALS, Vol. 8.

Thickness and temperature dependence of the atomic-scale structure of SrRuO3 thin films

APL MATERIALS, 10(5).

Thickness and temperature dependence of the atomic-scale structure of SrRuO₃thin films

ArXiv.

Coexistence of superconductivity and weak anti-localization at KTaO₃(111) interfaces

ArXiv.

Effect of buffer termination on intermixing and conductivity in LaTiO3/SrTiO3 heterostructures integrated on Si(100)

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A, 40(1).

Effect of buffer termination on intermixing and conductivity in LaTiO₃/SrTiO₃heterostructures integrated on Si(100)

ArXiv. http://www.scopus.com/inward/record.url?eid=2-s2.0-85115866549&partnerID=MN8TOARS

Interface-driven magnetic anisotropy in relaxed La0.7Sr0.3CrO3/La0.7Sr0.3MnO3 heterostructures on MgO

JOURNAL OF APPLIED PHYSICS, 129(5).

Oxygen vacancy-induced anomalous Hall effect in a nominally non-magnetic oxide

ArXiv.

Two-dimensional electron systems and interfacial coupling in LaCrO3/KTaO3 heterostructures

APPLIED PHYSICS LETTERS, 118(19).

Correlating polar distortions and interfacial charge at the polar/non-polar LaCrO3/SrTiO3 (001) interface

AIP Advances, 10(4).

Effect of strain on magnetic and orbital ordering of LaSrCrO3/LaSrMnO3 heterostructures

Physical Review B, 101(6).

Exchange bias in La0.7Sr0.3CrO3/La0.7Sr0.3MnO3/La0.7Sr0.3CrO3 heterostructures

AIP Advances, 10(1), 015001.

Interface-driven magnetic anisotropy in relaxed La_0.7Sr_0.3CrO₃/La_0.7Sr_0.3MnO₃ heterostructures on MgO

ArXiv.

On the redistribution of charge in La0.7Sr0.3CrO3/La0.7Sr0.3MnO3 multilayer thin films

AIP Advances, 10(4).

The Future of the Correlated Electron Problem

ArXiv.

Tuning of spin-orbit coupling in metal-free conjugated polymers by structural conformation

Physical Review Materials, 4(8).

Confinement of magnetism in atomically thin La0.7Sr0.3CrO3/La0.7Sr0.3MnO3 heterostructures

Npj Quantum Materials, 4(1).

Effect of strain on magnetic and orbital ordering of LaSrCrO₃/LaSrMnO₃ heterostructures

ArXiv.

Epitaxial Oxides on Semiconductors: From Fundamentals to New Devices

Advanced Functional Materials, 7(18), 1901597.

Growth-temperature dependence of conductivity at the LaCrO3/SrTiO3 (001) interface

Journal of Vacuum Science & Technology A, 37(2), 021102.

Suspended single-crystalline oxide structures on silicon through wet-etch techniques: Effects of oxygen vacancies and dislocations on etch rates

Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, 38(1).

Control of hidden ground state order in NdNiO₃superlattices

ArXiv.

Growth-temperature dependence of conductivity at the LaCrO₃/SrTiO₃ (001) interface

ArXiv.

Interfacial Structure of SrZrxTi1-xO3 films on Ge

ArXiv.

Interfacial structure of SrZrxTi1−xO3 films on Ge

Applied Physics Letters, 113(20), 201601.

Tuning metal-insulator behavior in LaTiO3/SrTiO3 heterostructures integrated directly on Si(100) through control of atomic layer thickness

Applied Physics Letters, 112(19), 193104.

Atomic layer control of metal-insulator behavior in oxide quantum wells integrated directly on silicon

ArXiv.

Confinement of magnetism in atomically-thin La0.7Sr0.3CrO3/La0.7Sr0.3MnO3 heterostructures.

ArXiv.

Control of hidden ground-state order in NdNiO3 superlattices

Physical Review Materials, 1(2).

Electrically coupling complex oxides to semiconductors: A route to novel material functionalities

Journal of Materials Research, 32(2), 249–259.

Single Atomic Layer Ferroelectric on Silicon

Nano Letters, 18(1), 241–246.

Structural distortions at polar manganite interfaces

PHYSICAL REVIEW B, 96(2).

Structural distortions at polar manganite interfaces

ArXiv.

Electrically Coupling Multifunctional Oxides to Semiconductors: A Route to Novel Material Functionalities

MRS Advances, 1(4), 255–263.

Engineered Unique Elastic Modes at a BaTiO3/(2×1)−Ge(001) Interface

Physical Review Letters, 116(10).

Role of double TiO2 layers at the interface of FeSe/SrTiO3 superconductors

Physical Review B, 93(18).

Orbital Engineering in Symmetry-Breaking Polar Heterostructures

Physical Review Letters, 114(2).

Oxide 2D electron gases as a route for high carrier densities on (001) Si

Applied Physics Letters, 106(20), 201602.

A high density two-dimensional electron gas in an oxide heterostructure on Si (001)

APL Materials, 2(11), 116109.

A silicon integrated BaTiO<inf>3</inf> electro-optic modulator

Conference on Lasers and Electro-Optics Europe - Technical Digest, 2014-January. http://www.scopus.com/inward/record.url?eid=2-s2.0-84944698664&partnerID=MN8TOARS

A silicon integrated BaTiO₃ electro-optic modulator

Optics InfoBase Conference Papers.

Active Silicon Integrated Nanophotonics: Ferroelectric BaTiO3 Devices

Nano Letters, 14(3), 1419–1425.

Effect of Surface Termination on the Electronic Properties of LaNiO3 Films

Physical Review Applied, 2(5), 054004.

Hysteretic electrical transport in BaTiO3/Ba1−xSrxTiO3/Ge heterostructures

Applied Physics Letters, 104(6), 062905.

Tuning the Structure of Nickelates to Achieve Two-Dimensional Electron Conduction

Advanced Materials, 26(12), 1935–1940.

La-doped BaTiO3 heterostructures: Compensating the polarization discontinuity

APL Materials, 1(6), 062107.

Modifying the Electronic Orbitals of Nickelate Heterostructures via Structural Distortions

Physical Review Letters, 110(18).

Phase diagram of compressively strained nickelate thin films

APL Materials, 1(3), 032110.

Role of epitaxial strain on the magnetic structure of Fe-doped CoFe2O4

Journal of Magnetism and Magnetic Materials, 345, 180–189.

Enhanced magnetic moment in ultrathin Fe-doped CoFe2O4 films

Physical Review B, 86(17).

Epitaxial strain-induced changes in the cation distribution and resistivity of Fe-doped CoFe2O4

Applied Physics Letters, 101(2).

Piezoelectric force microscopy of crystalline oxide-semiconductor heterostructures

Applied Physics Letters, 101(10).

Correlating structure, strain, and morphology of self-assembled InAs quantum dots on GaAs

Applied Physics Letters, 98(2).

Magnetic structure of Fe-doped CoFe(2)O(4) probed by x-ray magnetic spectroscopies

Physical Review B, 84(5).

Structure of droplet-epitaxy-grown InAs/GaAs quantum dots

Applied Physics Letters, 98(24).

Surface X-Ray Diffraction Results on the III-V Droplet Heteroepitaxy Growth Process for Quantum Dots: Recent Understanding and Open Questions

Sensors, 11(11), 10624–10637.

The atomic structure and polarization of strained SrTiO(3)/Si

Applied Physics Letters, 97(25).

Atomic-scale mapping of quantum dots formed by droplet epitaxy

Nature Nanotechnology, 4(12), 835–838.

Surface x-ray diffraction of complex metal oxide surfaces and interfaces - a new era

AIP Conference Proceedings, 1092, 9–12.

Surface x-ray diffraction of complex metal oxide surfaces and interfaces - a new era

In Synchrotron Radiation in Materials Science (Vol. 1092, pp. 9–12).

In situ imaging of high cycle fatigue crack growth in single crystal nickel-base superalloys by synchrotron X-radiation

Journal of Engineering Materials and Technology-Transactions of the Asme, 130(2), 0210081–0210086.

Mapping single-crystal dendritic microstructure and defects in nickel-base superalloys with synchrotron radiation

Acta Materialia, 56(17), 4715–4723.

Resonant coherent Bragg rod analysis of strained epitaxial heterostructures

Applied Physics Letters, 93(8).

Strain and composition mapping of epitaxial nanostructures

Applied Physics Letters, 92(15).