Ab Initio Velocity-Field Curves in Monoclinic \(\beta\)-Ga\textsubscript{2}O\textsubscript{3}}

By Krishnendu Ghosh, Uttam Singisetti. 2016

144 citations recorded by the source corpus.

We investigate the high-field transport in monoclinic β-Ga2O3 using a combination of ab initio calculations and full band Monte Carlo (FBMC) simulation. Scattering rate calculation and the final state selection in the FBMC simulation use complete wave-vector (both electron and phonon) and crystal direction dependent electron phonon interaction (EPI) elements. We propose and implement a semi-coarse version of the Wannier-Fourier interpolation method [Giustino et al., Phys. Rev. B 76, 165108 (2007)] for short-range non-polar optical phonon (EPI) elements in order to ease the computational requirement in FBMC simulation. During the interpolation of the EPI, the inverse Fourier sum over the real-space electronic grids is done on a coarse mesh while the unitary rotations are done on a fine mesh. This paper reports the high field transport in monoclinic β-Ga2O3 with deep insight into the contribution of electron-phonon interactions and velocity-field characteristics for electric fields ranging up to 450 kV/cm i...

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/4cf8007db66d4d56117f7ab0834a9e83bfc9eec2

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In Electronic, Optical and Magnetic Materials

  1. Lei Yuan
  2. Yuming Zhang
  3. Hongpeng Zhang
  4. Xiaoyan Tang
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In Materials Chemistry

  1. Lei Yuan
  2. Yuming Zhang
  3. Hongpeng Zhang
  4. Xiaoyan Tang
  5. Jichao Hu
  6. Jianwu Sun
  7. Renxu Jia
  8. Yimen Zhang

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