\textit{Ab-initio} Calculations of Electronic Properties of AlP, GaP and InP

ORAL

Abstract

We present results from \textit{ab-initio}, self consistent local density approximation (LDA) calculations of electronic and related properties of zinc blende aluminum, gallium and indium phosphides (AlP, GaP {\&} InP). We employed a local density approximation (LDA) potential and implemented the linear combination of atomic orbitals (LCAO) formalism. This implementation followed the Bagayoko, Zhao, and Williams (BZW) method, as enhanced by Ekuma and Franklin (BZW-EF). Our calculated, indirect band gap of 2.56 eV for AlP, and of 2.14 eV for GaP, from $\Gamma $ to X, are in excellent agreement with experimental values. Our calculated direct band gap of 1.40 eV, at $\Gamma $ -point for InP is also in excellent agreement with experimental value. We also report calculated electron and hole effective masses for AlP, GaP and InP and total (DOS) and partial (pDOS) densities of states. This research is funded in part by the National Science Foundation (NSF) and the Louisiana Board of Regents, through LASiGMA [Award Nos. EPS- 1003897, NSF (2010-15)-RII-SUBR] and NSF HRD-1002541, the US Department of Energy -- National, Nuclear Security Administration (NNSA) (Award No. DE-NA0001861), LaSPACE, and LONI-SUBR.

–

Authors

  • Yuriy Malozovsky

    Southern Univ \& A\&M Coll

  • Azizjon Saliev

    Binghamton University, Binghamton, New York, USA, Department of Electrical and Computer Engineering, Binghamton University, NY 13902 USA

  • Lashaunda Franklin

    Southern Univ \& A\&M Coll, Southern University and A\&M College in Baton Rouge (SUBR), Louisiana, USA, Department of Physics Southern University and A\&M College, Baton Rouge, LA 70813, USA, Department of Physics Southern University and A\&M College, Baton Rouge, LA 70813 USA

  • Chinedu Ekuma

    Department of Physics and Astronomy, Louisiana State University (LSU), Baton Rouge, Louisiana, USA, Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803 USA

  • Guang-Lin Zhao

    Physics Department, Southern University and A\&M College, Department of Physics Southern University and A\&M College, Baton Rouge, LA 70813 USA

  • Diola Bagayoko

    Southern Univ \& A\&M Coll, Southern University and A\&M College in Baton Rouge (SUBR), Louisiana, USA, Department of Physics Southern University and A\&M College, Baton Rouge, LA 70813, USA, Department of Physics Southern University and A\&M College, Baton Rouge, LA 70813 USA