“The joy of discovery is certainly the liveliest that the mind of man can ever feel”

– Claude Bernard –

Selected Publications

  1. Katherine M Price, Sina Najmaei, Chinedu E Ekuma, Robert A Burke, Madan Dubey, Aaron D Franklin, “Plasma-Enhanced Atomic Layer Deposition of HfO2 on Monolayer, Bilayer, and Trilayer MoS2 for the Integration of High-κ Dielectrics in Two-Dimensional Devices” ACS Applied Nano Materials 2(7), 4085 (2019). doi: 10.1021/acsanm.9b00505
  2. C. E. Ekuma, S. Najmaei, and M. Dubey, “Surface passivated and encapsulated ZnO atomic layer by high-κ ultrathin MgO layer” Nanoscale 11, 12502 (2019). doi: 10.1039/C9NR03288F
  3. C. E. Ekuma, S. Najmaei, and M. Dubey, “Electronic and vibrational properties of van der Waals heterostructures of vertically stacked few-layer atomically thin MoS2 and BP” Materials Today Communications 19, 383 (2019). doi: 10.1016/j.mtcomm.2019.03.005
  4. C. E. Ekuma, “Optical absorption in monolayer SnO2” Phys. Rev. B 99, 075421 (2019). doi: 10.1103/PhysRevB99.075421
  5. C. E. Ekuma, “Fingerprints of native defects in monolayer PbTe” Nanoscale Advances 1, 513 (2019). doi:  10.1039/C8NA00125A
  6. Kalisadhan Mukherjee, Chinedu E Ekuma, Yangyang Zhao, Abhishek Maikap, Sina Najmaei, Mona E Zaghloul, “Discrimination of 1‐ and 2‐Propanol by Using the Transient Current Change of a Semiconducting ZnFe2O4 Chemiresistor” ChemPlusChem Communications 84, 387 (2019). doi: 10.1002/cplu.201900036
  7. C. E. Ekuma, “Observation of Novel Multifunctionalities in Monolayer CdO ” Advanced Theory and Simulations 1, 1800107 (2018). doi: 10.1002/adts.201800107
  8. C. E. Ekuma and D. Gunlycke, “Optical absorption in monolayer molybdenum disulfide” Phys. Rev. B 97, 201414(R)  (2018). doi: 10.1103/PhysRevB.97.201414
  9. C. E. Ekuma, “Effects of vacancy defects on the electronic and optical properties of monolayer PbSe”, J. Phys. Chem. Lett.  9(13) 3680 (2018). doi: 10.1021/acs.jpclett.8b01585
  10. C. E. Ekuma, “Two-particle excitations under coexisting electron interaction and disorder”, Phys. Rev. B. 98, 085129 (2018). doi: 10.1103/PhysRevB.98.085129
  11.  C. E. Ekuma, V. Dobrosavljevic, and D. Gunlycke, “First-principles-based method for electron localization: Application to monolayer hexagonal boron nitride”, Phys. Rev. Lett. 118, 106404 (2017). doi: 10.1103/PhysRevLett.118.106404
  12. N.Q. Lee, C. E. Ekuma, B. Dunlap, and D. Gunlycke, “First-principles calculations of sarin adsorption on anatase surface”, J. Phys. Chem. C 122, 2832 (2018). doi: 10.1021/acs.jpcc.7b11509
  13. C. E. Ekuma et al.  “Electronic structure and X-ray spectroscopy of Cu2MnAl1-xGax”, Journal of Applied Physics 123,  161509 (2018). doi: 10.1063/1.4996650
  14. C.E. Ekuma et al. “Electronic, optical, and thermoelectric properties of Fe2+xV1−xAl”, AIP Advances 7, 045118 (2017). doi: 10.1063/1.4982671
  15. C. E. Ekuma, S.-X. Yang, H. Terletska, K.-M. Tam, N. S. Vidhyadhiraja, J. Moreno, and M. Jarrell, “Metal-Insulator-Transition in a Weakly interacting Disordered Electron System”, Phys. Rev. B 92, 201114(R) 2015. doi: 10.1103/PhysRevB.92.201114
  16. Y. Zhang, H. Terletska, C. Moore, C. E. Ekuma, K.-M. Tam, T. Berlijn, W. Ku, J. Moreno, M. Jarrell, “Study of multiband disordered systems using the typical medium dynamical cluster approximation”, Phys. Rev. B 92, 205111 (2015). doi: 10.1103/PhysRevB.92.205111 
  17. C. E. Ekuma, H. Terletska, C. Moore, K.-M. Tam, N. S. Vidhyadhiraja, J. Moreno, and M. Jarrell, “Finite Cluster Typical Medium Theory for Disordered Electronic Systems”, Phys. Rev. B  92, 014209 (2015). doi: 10.1103/PhysRevB.92.014209
  18. J. H. Mendez, C. E. Ekuma, Y. Wu, B. W. Fulfer,  J. C. Prestigiacomo, W. A. Shelton, M. Jarrell, J. Moreno, D. P. Young, P. W. Adams,  A. Karki, R. Jin, Julia Y. Chan, J. F. DiTusa, “Competing magnetic states, disorder, and the magnetic character of Fe3Ga4”, Phys. Rev. B 91, 144409 (2015). doi: 10.1103/PhysRevB.91.144409
  19. H Terletska, C. E. Ekuma, C. Moore, K. -M Tam, Z-Y Meng, J Moreno, M Jarrell, “Study of off-diagonal disorder using the typical medium dynamical cluster approximation”, Phys. Rev. B 90, 094208 (2014). doi: 10.1103/PhysRevB.90.094208
  20. C. E. Ekuma, H Terletska, K-M Tam, Z-Y Meng, J Moreno, M Jarrell, “Typical medium dynamical cluster approximation for the study of Anderson localization in three dimensions”, Phys. Rev. B 89, 081107(R) (2014). doi: 10.1103/PhysRevB.89.081107
  21. C. E. Ekuma, V. I. Anisimov, J. Moreno, and M. Jarrell, “Electronic Structure and Spectra of CuO”, The European Physical Journal B 87, 23 (2014). doi: 10.1140/epjb/e2013-40949-5
  22. C. E. Ekuma, J. Moreno, and M. Jarrell, “Electronic, transport, optical, and structural properties of rocksalt CdO”, J. Appl. Phys. 114, 153705 (2013). doi: 10.1063/1.4825312
  23. C. E. Ekuma, H. Terletska, Z.-Y. Meng, J. Moreno, M. Jarrell, S. Mahmoudian, and V. Dobrosavljevic, “Effective Cluster Typical Medium Theory for Diagonal Anderson Disorder Model in One-and Two-Dimensions”, J. Phys.: Condens. Matter 26, 274209 (2014). doi: 10.1088/0953-8984/26/27/274209
  24. C. E. Ekuma, Chia-Hui Lin, J. Moreno, W. Ku, and M. Jarrell, “First-principles Wannier function analysis of the electronic structure of PdTe: weaker magnetism and superconductivity”, J. Phys.: Condens. Matter 25, 405601 (2013). doi: 10.1088/0953-8984/25/40/405601
  25. C. E. Ekuma, D. Bagayoko., Moreno, and M. Jarrell, “Re-examining the Electronic Structure of Ge: A First-Principle Study”, Phys. Lett. A 317 (34-37), 2172-2176 (2013). doi:10.1016/j.physleta.2013.05.043
  26. L. Franklin, C. E. Ekuma, G. L. Zhao, and D. Bagayoko, “Density functional theory description of electronic properties of wurtzite zinc oxide”, Journal of Physics and Chemistry of Solids 74 (5), 729-736 (2013). doi: 10.1016/j.jpcs.2013.01.013
  27. J. Li, C. E. Ekuma, I. Vekhter, M. Jarrell, J. Moreno, S. Stadler, A. Karki, and R. Jin, “Physical Properties of Ba2Mn2Sb2O Single Crystals”, Phys. Rev. B 86, 195142 (2012). doi: 10.1103/PhysRevB.86.195142
  28. C. E. Ekuma, J. Moreno, M. Jarrell, and D. Bagayoko, “Electronic, Structural, and Elastic Properties of Metal Nitrides XN (X = Sc, YN): A First-Principle Study”, AIP Advances 2, 032163 (2012). doi: 10.1063/1.4751260
  29. C. E. Ekuma, M. Jarrell, J. Moreno, and D. Bagayoko, “First Principle Electronic, Structural, Elastic, and Optical Properties of Strontium Titanate”, AIP Advances 2, 012189 (2012). doi: 10.1063/1.3700433
  30. C. E. Ekuma, David J. Singh, J. Moreno, and M. Jarrell, “Optical Properties of PbTe and PbSe”, Phys. Rev. B 85, 085205 (2012). doi: 10.1103/PhysRevB.85.085205
  31. C. E. Ekuma and D. Bagayoko, “Ab-initio Electronic and Structural Properties of Rutile Titanium Dioxide”, Jpn. J. Appl. Phys. 50, 101103 (2011). doi: 10.1143/JJAP.50.101103
  32. Y. Zhen, S. Hall, T. Brown, C. E. Ekuma, Z. Bell, Z. W. Sun, and J. T. Wang, “Synthesis and Characterization of (1-x)(Na_0.5Bi_0.5)TiO_3-xAl_6Bi_2O_12 Solid Solution”, Ferroelectrics 413 (1), 192-205 (2011). doi: 10.1063/1.2967335
  33. C. E. Ekuma, L. Franklin, J. T. Wang, G. L. Zhao, and D. Bagayoko, “Local density approximation description of electronic properties of wurtzite cadmium sulfide (w-CdS)”, Can. J. Phys. 89 (3), 319-324 (2011). doi: 10.1139/P11-023
  34. C. E. Ekuma, L. Franklin, J. T. Wang, G. L. Zhao, and D. Bagayoko, “Ab-initio local density approximation description of the electronic properties of zinc blende cadmium sulde (zb-CdS)”, Physica B 406 (8), 1477 (2011). doi: 10.1016/j.physb.2011.01.051