An efficient method for subband calculations of cylindrical nanowire transistors using a Fourier harmonics expansion

  • Geon-Tae Jang
  • Sung-Min HongEmail author


We propose an efficient method for subband calculations of cylindrical nanowire transistors with an arbitrary channel orientation. To perform the subband calculation efficiently, the wavefunctions are expanded using Fourier harmonics. It is confirmed that the use of an approximate isotropic effective mass introduces an error in the subband calculation due to the incorrectly calculated potential energy. A comparison with the results obtained in the Cartesian coordinate system confirms the accuracy of our method. Moreover, the simulation time required to obtain the self-consistent solution is significantly reduced.


Semiconductor device simulation Subband calculation Nanowire transistor Self-consistent Schrödinger–Poisson solver Fourier harmonics expansion 



This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2018R1D1A1B07048277). It was also supported by GIST Research Institute (GRI) grant funded by the GIST in 2018.


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Authors and Affiliations

  1. 1.School of Electrical Engineering and Computer ScienceGwangju Institute of Science and TechnologyGwangjuSouth Korea

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