Solid State Physics

Nanostructures

Nanoscaling

Education

• Ph.D., Physics, South Dakota School of Mines and Technology, 2002
• M.S., Physics, Odessa State University, 1996

Research Interests

• Theoretical calculations of point defect-related luminescence, defect complexes and carrier compensation in wide band gap semiconductors
• Lattice thermal conductivity of complex metal oxides and their nanostructures
• Nanoscaling approaches to thermoelectricity by computing both lattice and electronic parts of thermal conductivity
• Molecular dynamics modeling of plasticity in nanowires and their strengthening mechanisms

Select Publications

• D. O. Demchenko, M. Vorobiov, O. Andrieiev, T. H. Myers, and M. A. Reshchikov, “Shallow and deep states of beryllium acceptor in GaN: why photoluminescence experiments do not reveal small polarons for defects in semiconductors”, Phys. Rev. Lett. 126, 027401 (2021).
• D. O. Demchenko and M. A. Reshchikov, “Passivation of the beryllium acceptor in GaN and a possible route for p-type doping”, Appl. Phys. Lett. 118, 142103 (2021).
• M. A. Reshchikov, D. O. Demchenko, D. Ye, O. Andrieiev, M. Vorobiov, K. Grabianska, M. Zajac, P. Nita, M. Iwinska, M. Bockowski, B. McEwen, and F. Shahedipour-Sandvik, “The effect of annealing on photoluminescence from defects in ammonothermal GaN” J Appl. Phys. 131, 035704 (2022).
• M. A. Reshchikov, M. Vorobiov, O. Andrieiev, D. O. Demchenko, B. McEwen, F. Shahedipour-Sandvik, “Dual nature of the BeGa acceptor in GaN: Evidence from photoluminescence”, Phys. Rev. B 108, 075202 (2023).
• R. Secondo, A. Ball, B. T. Diroll, D. Fomra, K. Ding, V. Avrutin, Ü. Özgür, H. Morkoç, D. O. Dem-chenko, J. B. Khurgin, and N. Kinsey, “Deterministic modeling of hybrid nonlinear effects in epsi-lon-near-zero thin films”, Appl. Phys. Lett. 120, 031103 (2022).

Courses

• University Physics I (PHYS-207)
• Modern Physics (PHYS-320)
• Modern Physics Laboratory (PHYZ-320)