Scholars@Duke

• Background
• 

  Education, Training, & Certifications

  • Ph.D., University of Michigan, Ann Arbor 2009
  • M.S.E.E., University of Michigan, Ann Arbor 2007
• Recognition
• 

  Awards & Honors

  • The 2022 Oxide Electronics Prize for Excellence in Research. International Workshop on Oxide Electronics . 2022
  • National Science Foundation CAREER Awards - Multiple Sciences. National Science Foundation (NSF). 2018
• Publications & Artistic Works
• 

  Selected Publications

  • Academic Articles

    • Yang, N., X. Zhang, L. Reynolds, D. Kumah, and C. Xu. “The Role of Carbon Content: A Comparison of the Nickel Particle Size and Magnetic Property of Nickel/Polysiloxane-Derived Silicon Oxycarbide.” Advanced Engineering Materials 25, no. 9 (May 1, 2023). https://doi.org/10.1002/adem.202201453.
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    • Negi, Ankit, Alejandro Rodriguez, Xuanyi Zhang, Andrew H. Comstock, Cong Yang, Dali Sun, Xiaoning Jiang, Divine Kumah, Ming Hu, and Jun Liu. “Thickness-Dependent Thermal Conductivity and Phonon Mean Free Path Distribution in Single-Crystalline Barium Titanate.” Advanced Science (Weinheim, Baden Wurttemberg, Germany), April 2023, e2301273. https://doi.org/10.1002/advs.202301273.
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    • Arnault, Ethan G., Athby H. Al-Tawhid, Salva Salmani-Rezaie, David A. Muller, Divine P. Kumah, Mohammad S. Bahramy, Gleb Finkelstein, and Kaveh Ahadi. “Anisotropic superconductivity at KTaO₃(111) interfaces.” Science Advances 9, no. 7 (February 2023): eadf1414. https://doi.org/10.1126/sciadv.adf1414.
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    • Negi, Ankit, Hwang Pill Kim, Zilong Hua, Anastasia Timofeeva, Xuanyi Zhang, Yong Zhu, Kara Peters, Divine Kumah, Xiaoning Jiang, and Jun Liu. “Ferroelectric Domain Wall Engineering Enables Thermal Modulation in PMN-PT Single Crystals.” Advanced Materials (Deerfield Beach, Fla.), February 2023, e2211286. https://doi.org/10.1002/adma.202211286.
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    • Al-Tawhid, A. H., J. Kanter, M. Hatefipour, D. L. Irving, D. P. Kumah, J. Shabani, and K. Ahadi. “Oxygen Vacancy-Induced Anomalous Hall Effect in a Nominally Non-magnetic Oxide.” Journal of Electronic Materials 51, no. 12 (December 1, 2022): 7073–77. https://doi.org/10.1007/s11664-022-09941-9.
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    • Al-Tawhid, A. H., J. Kanter, M. Hatefipour, D. P. Kumah, J. Shabani, and K. Ahadi. “Superconductivity and Weak Anti-localization at KTaO3 (111) Interfaces.” Journal of Electronic Materials 51, no. 11 (November 1, 2022): 6305–9. https://doi.org/10.1007/s11664-022-09844-9.
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    • Ozbek, Y., C. Brooks, X. Zhang, A. Al-Tawhid, V. A. Stoica, Z. Zhang, and D. P. Kumah. “Superconducting phase of Tix Oy thin films grown by molecular beam epitaxy.” Physical Review Materials 6, no. 6 (June 1, 2022). https://doi.org/10.1103/PhysRevMaterials.6.064805.
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    • Zhang, X., A. N. Penn, L. Wysocki, Z. Zhang, P. H. M. Van Loosdrecht, L. Kornblum, J. M. Lebeau, I. Lindfors-Vrejoiu, and D. P. Kumah. “Thickness and temperature dependence of the atomic-scale structure of SrRuO3thin films.” Apl Materials 10, no. 5 (May 1, 2022). https://doi.org/10.1063/5.0087791.
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    • Chen, T., K. Ahmadi-Majlan, Z. H. Lim, Z. Zhang, J. H. Ngai, and D. P. Kumah. “Effect of buffer termination on intermixing and conductivity in LaTiO3/SrTiO3heterostructures integrated on Si(100).” Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films 40, no. 1 (January 1, 2022). https://doi.org/10.1116/6.0001464.
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    • Al-Tawhid, A. H., D. P. Kumah, and K. Ahadi. “Two-dimensional electron systems and interfacial coupling in LaCrO3/KTaO3heterostructures.” Applied Physics Letters 118, no. 19 (May 10, 2021). https://doi.org/10.1063/5.0049119.
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    • Koohfar, S., Y. Ozbek, H. Bland, Z. Zhang, and D. P. Kumah. “Interface-driven magnetic anisotropy in relaxed La0.7Sr0.3CrO3/La0.7Sr0.3MnO3heterostructures on MgO.” Journal of Applied Physics 129, no. 5 (February 7, 2021). https://doi.org/10.1063/5.0033236.
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    • Vetter, E., I. Vonwald, S. Yang, L. Yan, S. Koohfar, D. Kumah, Z. G. Yu, W. You, and D. Sun. “Tuning of spin-orbit coupling in metal-free conjugated polymers by structural conformation.” Physical Review Materials 4, no. 8 (August 1, 2020). https://doi.org/10.1103/PHYSREVMATERIALS.4.085603.
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    • Kumah, D. P., J. H. Ngai, and L. Kornblum. “Epitaxial Oxides on Semiconductors: From Fundamentals to New Devices.” Advanced Functional Materials 30, no. 18 (May 1, 2020). https://doi.org/10.1002/adfm.201901597.
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    • Al-Tawhid, A. H., and D. P. Kumah. “Correlating polar distortions and interfacial charge at the polar/non-polar LaCrO3/SrTiO3(001) interface.” Aip Advances 10, no. 4 (April 1, 2020). https://doi.org/10.1063/5.0002298.
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    • Penn, A. N., S. Koohfar, D. P. Kumah, and J. M. Lebeau. “On the redistribution of charge in La0.7Sr0.3CrO3/La0.7Sr0.3MnO3 multilayer thin films.” Aip Advances 10, no. 4 (April 1, 2020). https://doi.org/10.1063/1.5140352.
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    • Koohfar, S., A. B. Georgescu, I. Hallsteinsen, R. Sachan, M. A. Roldan, E. Arenholz, and D. P. Kumah. “Effect of strain on magnetic and orbital ordering of LaSrCrO3/LaSrMnO3 heterostructures.” Physical Review B 101, no. 6 (February 1, 2020). https://doi.org/10.1103/PhysRevB.101.064420.
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    • Lim, Z. H., M. Chrysler, A. Kumar, J. P. Mauthe, D. P. Kumah, C. Richardson, J. M. Lebeau, and J. H. Ngai. “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, no. 1 (January 1, 2020). https://doi.org/10.1116/1.5135035.
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    • Olmos, R., H. Iturriaga, D. S. Blazer, S. Koohfar, K. Gandha, I. C. Nlebedim, D. P. Kumah, and S. R. Singamaneni. “Exchange bias in La0.7Sr0.3CrO3/La0.7Sr0.3MnO3/La0.7Sr0.3CrO3 heterostructures.” Aip Advances 10, no. 1 (January 1, 2020). https://doi.org/10.1063/1.5130453.
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    • Koohfar, S., A. B. Georgescu, A. N. Penn, J. M. LeBeau, E. Arenholz, and D. P. Kumah. “Confinement of magnetism in atomically thin La0.7Sr0.3CrO3/La0.7Sr0.3MnO3 heterostructures.” Npj Quantum Materials 4, no. 1 (December 1, 2019). https://doi.org/10.1038/s41535-019-0164-1.
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    • Al-Tawhid, A., J. R. Frick, D. B. Dougherty, and D. P. Kumah. “Growth-temperature dependence of conductivity at the LaCrO 3 /SrTiO 3 (001) interface.” Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films 37, no. 2 (March 1, 2019). https://doi.org/10.1116/1.5085334.
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    • Chen, T., K. Ahmadi-Majlan, Z. H. Lim, Z. Zhang, J. H. Ngai, A. F. Kemper, and D. P. Kumah. “Interfacial structure of SrZrxTi1-xO3 films on Ge.” Applied Physics Letters 113, no. 20 (November 12, 2018). https://doi.org/10.1063/1.5046394.
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    • Ahmadi-Majlan, K., T. Chen, Z. H. Lim, P. Conlin, R. Hensley, M. Chrysler, D. Su, H. Chen, D. P. Kumah, and J. H. Ngai. “Tuning metal-insulator behavior in LaTiO3/SrTiO3 heterostructures integrated directly on Si(100) through control of atomic layer thickness.” Applied Physics Letters 112, no. 19 (May 7, 2018). https://doi.org/10.1063/1.5018069.
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    • Dogan, Mehmet, Stéphanie Fernandez-Peña, Lior Kornblum, Yichen Jia, Divine P. Kumah, James W. Reiner, Zoran Krivokapic, et al. “Single Atomic Layer Ferroelectric on Silicon.” Nano Letters 18, no. 1 (January 2018): 241–46. https://doi.org/10.1021/acs.nanolett.7b03988.
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    • Koohfar, S., A. S. Disa, M. S. J. Marshall, F. J. Walker, C. H. Ahn, and D. P. Kumah. “Structural distortions at polar manganite interfaces.” Physical Review B 96, no. 2 (July 31, 2017). https://doi.org/10.1103/PhysRevB.96.024108.
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    • Disa, A. S., A. B. Georgescu, J. L. Hart, D. P. Kumah, P. Shafer, E. Arenholz, D. A. Arena, et al. “Control of hidden ground-state order in NdNi O3 superlattices.” Physical Review Materials 1, no. 2 (July 27, 2017). https://doi.org/10.1103/PhysRevMaterials.1.024410.
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    • Ngai, J. H., K. Ahmadi-Majlan, J. Moghadam, M. Chrysler, D. Kumah, F. J. Walker, C. H. Ahn, et al. “Electrically coupling complex oxides to semiconductors: A route to novel material functionalities.” Journal of Materials Research 32, no. 2 (January 27, 2017): 249–59. https://doi.org/10.1557/jmr.2016.496.
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    • Zou, K., S. Mandal, S. D. Albright, R. Peng, Y. Pu, D. Kumah, C. Lau, et al. “Role of double Ti O2 layers at the interface of FeSe/ SrTi O3 superconductors.” Physical Review B 93, no. 18 (May 16, 2016). https://doi.org/10.1103/PhysRevB.93.180506.
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    • Kumah, D. P., M. Dogan, J. H. Ngai, D. Qiu, Z. Zhang, D. Su, E. D. Specht, S. Ismail-Beigi, C. H. Ahn, and F. J. Walker. “Engineered Unique Elastic Modes at a BaTiO_{3}/(2×1)-Ge(001) Interface.” Physical Review Letters 116, no. 10 (March 2016): 106101. https://doi.org/10.1103/physrevlett.116.106101.
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    • Kornblum, L., E. N. Jin, D. P. Kumah, A. T. Ernst, C. C. Broadbridge, C. H. Ahn, and F. J. Walker. “Oxide 2D electron gases as a route for high carrier densities on (001) Si.” Applied Physics Letters 106, no. 20 (May 18, 2015). https://doi.org/10.1063/1.4921437.
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    • Disa, Ankit S., Divine P. Kumah, Andrei Malashevich, Hanghui Chen, Dario A. Arena, Eliot D. Specht, Sohrab Ismail-Beigi, F. J. Walker, and Charles H. Ahn. “Orbital engineering in symmetry-breaking polar heterostructures.” Physical Review Letters 114, no. 2 (January 2015): 026801. https://doi.org/10.1103/physrevlett.114.026801.
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    • Kumah, D. P., A. Malashevich, A. S. Disa, D. A. Arena, F. J. Walker, S. Ismail-Beigi, and C. H. Ahn. “Effect of surface termination on the electronic properties of LaNiO3 films.” Physical Review Applied 2, no. 5 (November 6, 2014). https://doi.org/10.1103/PhysRevApplied.2.054004.
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    • Jin, E. N., L. Kornblum, D. P. Kumah, K. Zou, C. C. Broadbridge, J. H. Ngai, C. H. Ahn, and F. J. Walker. “A high density two-dimensional electron gas in an oxide heterostructure on Si (001).” Apl Materials 2, no. 11 (November 1, 2014). https://doi.org/10.1063/1.4902433.
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    • Ngai, J. H., D. P. Kumah, C. H. Ahn, and F. J. Walker. “Hysteretic electrical transport in BaTiO3/Ba1-xSrxTiO3/Ge heterostructures.” Applied Physics Letters 104, no. 6 (October 2, 2014). https://doi.org/10.1063/1.4864648.
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    • Kumah, Divine P., Ankit S. Disa, Joseph H. Ngai, Hanghui Chen, Andrei Malashevich, James W. Reiner, Sohrab Ismail-Beigi, Frederick J. Walker, and Charles H. Ahn. “Tuning the structure of nickelates to achieve two-dimensional electron conduction.” Advanced Materials (Deerfield Beach, Fla.) 26, no. 12 (March 2014): 1935–40. https://doi.org/10.1002/adma.201304256.
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    • Xiong, Chi, Wolfram H. P. Pernice, Joseph H. Ngai, James W. Reiner, Divine Kumah, Frederick J. Walker, Charles H. Ahn, and Hong X. Tang. “Active silicon integrated nanophotonics: ferroelectric BaTiO₃ devices.” Nano Letters 14, no. 3 (March 2014): 1419–25. https://doi.org/10.1021/nl404513p.
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    • Chen, Hanghui, Divine P. Kumah, Ankit S. Disa, Frederick J. Walker, Charles H. Ahn, and Sohrab Ismail-Beigi. “Modifying the electronic orbitals of nickelate heterostructures via structural distortions.” Physical Review Letters 110, no. 18 (May 2013): 186402. https://doi.org/10.1103/physrevlett.110.186402.
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    • Disa, A. S., D. P. Kumah, J. H. Ngai, E. D. Specht, D. A. Arena, F. J. Walker, and C. H. Ahn. “Phase diagram of compressively strained nickelate thin films.” Apl Materials 1, no. 3 (January 1, 2013). https://doi.org/10.1063/1.4820431.
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    • Kumah, D. P., Y. Yacoby, S. A. Pauli, P. R. Willmott, and R. Clarke. “La-doped BaTiO3 heterostructures: Compensating the polarization discontinuity.” Apl Materials 1, no. 6 (January 1, 2013). https://doi.org/10.1063/1.4849735.
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    • Moyer, J. A., D. P. Kumah, C. A. F. Vaz, D. A. Arena, and V. E. Henrich. “Role of epitaxial strain on the magnetic structure of Fe-doped CoFe 2O4.” Journal of Magnetism and Magnetic Materials 345 (January 1, 2013): 180–89. https://doi.org/10.1016/j.jmmm.2013.06.031.
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    • Moyer, J. A., C. A. F. Vaz, D. P. Kumah, D. A. Arena, and V. E. Henrich. “Enhanced magnetic moment in ultrathin Fe-doped CoFe 2O 4 films.” Physical Review B  Condensed Matter and Materials Physics 86, no. 17 (November 5, 2012). https://doi.org/10.1103/PhysRevB.86.174404.
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    • Marshall, M. S. J., D. P. Kumah, J. W. Reiner, A. P. Baddorf, C. H. Ahn, and F. J. Walker. “Piezoelectric force microscopy of crystalline oxide-semiconductor heterostructures.” Applied Physics Letters 101, no. 10 (September 3, 2012). https://doi.org/10.1063/1.4750243.
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    • Moyer, J. A., D. P. Kumah, C. A. F. Vaz, D. A. Arena, and V. E. Henrich. “Epitaxial strain-induced changes in the cation distribution and resistivity of Fe-doped CoFe 2O 4.” Applied Physics Letters 101, no. 2 (July 9, 2012). https://doi.org/10.1063/1.4735233.
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    • Moyer, J. A., C. A. F. Vaz, D. A. Arena, D. Kumah, E. Negusse, and V. E. Henrich. “Magnetic structure of Fe-doped CoFe2O4 probed by x-ray magnetic spectroscopies.” Physical Review B  Condensed Matter and Materials Physics 84, no. 5 (August 15, 2011). https://doi.org/10.1103/PhysRevB.84.054447.
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    • Cohen, E., S. Yochelis, O. Westreich, S. Shusterman, D. P. Kumah, R. Clarke, Y. Yacoby, and Y. Paltiel. “Structure of droplet-epitaxy-grown InAs/GaAs quantum dots.” Applied Physics Letters 98, no. 24 (June 13, 2011). https://doi.org/10.1063/1.3599063.
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    • Kumah, D. P., J. H. Wu, N. S. Husseini, V. D. Dasika, R. S. Goldman, Y. Yacoby, and R. Clarke. “Correlating structure, strain, and morphology of self-assembled InAs quantum dots on GaAs.” Applied Physics Letters 98, no. 2 (January 10, 2011). https://doi.org/10.1063/1.3535984.
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    • Cohen, Eyal, Naomi Elfassy, Guy Koplovitz, Shira Yochelis, Sergey Shusterman, Divine P. Kumah, Yizhak Yacoby, Roy Clarke, and Yossi Paltiel. “Surface x-ray diffraction results on the III-V droplet heteroepitaxy growth process for quantum dots: recent understanding and open questions.” Sensors (Basel, Switzerland) 11, no. 11 (January 2011): 10624–37. https://doi.org/10.3390/s111110624.
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    • Kumah, D. P., J. W. Reiner, Y. Segal, A. M. Kolpak, Z. Zhang, D. Su, Y. Zhu, et al. “The atomic structure and polarization of strained SrTiO3/Si.” Applied Physics Letters 97, no. 25 (December 20, 2010). https://doi.org/10.1063/1.3529460.
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    • Kumah, Divine P., Sergey Shusterman, Yossi Paltiel, Yizhak Yacoby, and Roy Clarke. “Atomic-scale mapping of quantum dots formed by droplet epitaxy.” Nature Nanotechnology 4, no. 12 (December 2009): 835–38. https://doi.org/10.1038/nnano.2009.271.
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    • Husseini, N. S., D. P. Kumah, J. Z. Yi, C. J. Torbet, D. A. Arms, E. M. Dufresne, T. M. Pollock, J. Wayne Jones, and R. Clarke. “Mapping single-crystal dendritic microstructure and defects in nickel-base superalloys with synchrotron radiation.” Acta Materialia 56, no. 17 (October 1, 2008): 4715–23. https://doi.org/10.1016/j.actamat.2008.05.041.
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    • Kumah, D. P., A. Riposan, C. N. Cionca, N. S. Husseini, R. Clarke, J. Y. Lee, J. M. Millunchick, et al. “Resonant coherent Bragg rod analysis of strained epitaxial heterostructures.” Applied Physics Letters 93, no. 8 (September 15, 2008). https://doi.org/10.1063/1.2975835.
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    • Cionca, C. N., A. Riposan, D. P. Kumah, N. S. Husseini, D. A. Walko, Y. Yacoby, J. M. Millunchick, and R. Clarke. “Strain and composition mapping of epitaxial nanostructures.” Applied Physics Letters 92, no. 15 (April 24, 2008). https://doi.org/10.1063/1.2908214.
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    • Herger, R., P. R. Willmott, C. M. Schlepütz, M. Björck, S. A. Pauli, D. Martoccia, B. D. Patterson, et al. “Structure determination of monolayer-by-monolayer grown La1-x Srx MnO3 thin films and the onset of magnetoresistance.” Physical Review B  Condensed Matter and Materials Physics 77, no. 8 (February 1, 2008). https://doi.org/10.1103/PhysRevB.77.085401.
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    • Willmott, P. R., S. A. Pauli, R. Herger, C. M. Schlepütz, D. Martoccia, B. D. Patterson, B. Delley, et al. “Structural basis for the conducting interface between LaAlO3 and SrTiO3.” Physical Review Letters 99, no. 15 (October 2007): 155502. https://doi.org/10.1103/physrevlett.99.155502.
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    • Kumah, D. P., A. Cebollada, C. Clavero, J. M. García-Martín, J. R. Skuza, R. A. Lukaszew, and R. Clarke. “Optimizing the planar structure of (1 1 1) Au/Co/Au trilayers.” Journal of Physics D: Applied Physics 40, no. 9 (May 7, 2007): 2699–2704. https://doi.org/10.1088/0022-3727/40/9/003.
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    • Boschetto, D., G. Mourou, A. Rousse, A. Mordovanakis, B. Hou, J. Nees, D. Kumah, and R. Clarke. “Spatial coherence properties of a compact and ultrafast laser-produced plasma keV x-ray source.” Applied Physics Letters 90, no. 1 (January 15, 2007). https://doi.org/10.1063/1.2426941.
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    • González-Díaz, J. B., A. García-Martín, G. Armelles, J. M. García-Martín, C. Clavero, A. Cebollada, R. A. Lukaszew, J. R. Skuza, D. P. Kumah, and R. Clarke. “Surface-magnetoplasmon nonreciprocity effects in noble-metal/ferromagnetic heterostructures.” Physical Review B  Condensed Matter and Materials Physics 76, no. 15 (January 1, 2007). https://doi.org/10.1103/PhysRevB.76.153402.
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  • Conference Papers

    • Ngai, J. H., K. Ahmadi-Majlan, J. Moghadam, M. Chrysler, D. P. Kumah, C. H. Ahn, F. J. Walker, et al. “Electrically coupling multifunctional oxides to semiconductors: A route to novel material functionalities.” In Mrs Advances, 1:255–63, 2016. https://doi.org/10.1557/adv.2016.101.
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    • Xiong, C., W. H. P. Pernice, J. H. Ngai, J. W. Reiner, D. Kumah, F. J. Walker, C. H. Ahn, and H. X. Tang. “A silicon integrated BaTiO3 electro-optic modulator.” In Conference on Lasers and Electro Optics Europe  Technical Digest, Vol. 2014-January, 2014.
    • Xiong, C., W. H. P. Pernice, J. H. Ngai, J. W. Reiner, D. Kumah, F. J. Walker, C. H. Ahn, and H. X. Tang. “A silicon integrated BaTiO3 electro-optic modulator.” In Optics Infobase Conference Papers, 2014. https://doi.org/10.1364/cleo_si.2014.sth1m.5.
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    • Schlepütz, C. M., P. R. Willmott, S. A. Pauli, R. Herger, D. Martoccia, M. Björck, D. Kumah, R. Clarke, and Y. Yacoby. “Surface x-ray diffraction of complex metal oxide surfaces and interfaces - a new era.” In Aip Conference Proceedings, 1092:9–12, 2009. https://doi.org/10.1063/1.3086245.
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    • Liu, L., N. S. Husseini, C. J. Torbet, D. P. Kumah, R. Clarke, T. M. Pollock, and J. Wayne Jones. “In situ imaging of high cycle fatigue crack growth in single crystal nickel-base superalloys by synchrotron X-radiation.” In Journal of Engineering Materials and Technology, 130:0210081–86, 2008. https://doi.org/10.1115/1.2840966.
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    • González-Díaz, J. B., A. García-Martín, G. Armeües, J. M. Garcia-Martin, C. Clavero, A. Cebollada, R. Clarke, D. Kumah, R. A. Lukaszew, and J. Skuza. “Surface plasmon resonance effects in the Magneto Optical activity of noble metal-ferro magnet ultrathin films.” In Conference on Lasers and Electro Optics Europe  Technical Digest, 2007. https://doi.org/10.1109/CLEOE-IQEC.2007.4386554.
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    • Gonzalez-Diaz, J. B., A. Garcia-Martin, G. Armelles, J. M. Garcia-Martin, C. Clavero, A. Cebollada, R. Clarke, D. Kumah, R. A. Lukaszew, and J. Skuza. “Surface plasmon resonance effects in the Magneto Optical activity of noble metal-ferromagnet ultrathin films.” In Optics Infobase Conference Papers, 2007.
    • Boschetto, D., A. Mordovanakis, J. Nees, B. Hou, D. Kumah, R. Clarke, G. Mourou, and A. Rousse. “Demonstration of spatial coherence with a compact and ultrafast x-ray source.” In Conference on Lasers and Electro Optics and 2006 Quantum Electronics and Laser Science Conference, Cleo/Qels 2006, 2006. https://doi.org/10.1109/CLEO.2006.4627599.
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  • Preprints

    • Ozbek, Yasemin, Cooper Brooks, Athby Al-Tawhid, Xuanyi Zhang, Vladmir Stoica, Zhan Zhang, and Divine P. Kumah. “Superconducting Phase of $\mathrm{Ti_xO_y}$ Thin Films Grown by Molecular Beam Epitaxy,” March 2, 2022.
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    • Zhang, Xuanyi, Aubrey N. Penn, Lena Wysocki, Zhan Zhang, Paul HM van Loosdrecht, Lior Kornblum, James M. LeBeau, Ionela Lindfors-Vrejoiu, and Divine P. Kumah. “Thickness and temperature dependence of the atomic-scale structure of SrRuO$_3$ thin films,” February 3, 2022.
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    • Chen, Tongjie, Kamyar Ahmadi-Majlan, Zheng Hui Lim, Zhan Zhang, Joseph H. Ngai, and Divine P. Kumah. “Effect of Buffer Termination on Intermixing and Conductivity in LaTiO$_3$/SrTiO$_3$ Heterostructures Integrated on Si(100),” September 17, 2021.
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    • Koohfar, Sanaz, Yasemin Ozbek, Hayden S. Bland, Zhan Zhang, and Divine P. Kumah. “Interface-driven magnetic anisotropy in relaxed La$_{0.7}$Sr$_{0.3}$CrO$_3$/La$_{0.7}$Sr$_{0.3}$MnO$_3$ heterostructures on MgO,” October 14, 2020.
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    • Koohfar, Sanaz, Alexandru B. Georgescu, Ingrid Hallsteinsen, Ritesh Sachan, Manuel A. Roldan, Elke Arenholz, and Divine P. Kumah. “Effect of strain on magnetic and orbital ordering of LaSrCrO$_3$/LaSrMnO$_3$ heterostructures,” November 7, 2019.
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    • Al-Tawhid, A. H., J. R. Frick, D. B. Dougherty, and D. P. Kumah. “Growth-Temperature Dependence of Conductivity at the LaCrO$_3$/SrTiO$_3$ (001) Interface,” July 27, 2018.
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    • Chen, Tongjie, Kamyar Ahmadi-Majlan, Zheng Hui Lim, Zhan Zhang, Joseph H. Ngai, Alexander F. Kemper, and Divine P. Kumah. “Interfacial Structure of SrZr$_{x}$Ti$_{1-x}$O$_3$ films on Ge,” June 28, 2018.
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    • Koohfar, Sanaz, Alexandru Bogdan Georgescu, Aubrey Penn, James M. LeBeau, Elke Arenholz, and Divine Philip Kumah. “Confinement of magnetism in atomically-thin $La_{0.7}Sr_{0.3}CrO_3$/$La_{0.7}Sr_{0.3}MnO_3$ heterostructures,” October 20, 2017.
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    • Koohfar, S., A. S. Disa, M. Marshall, F. J. Walker, C. H. Ahn, and D. P. Kumah. “Structural Distortions At Polar Manganite Interfaces,” April 17, 2017.
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