中国物理B ›› 2016, Vol. 25 ›› Issue (5): 57307-057307.doi: 10.1088/1674-1056/25/5/057307

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Electron transport in electrically biased inverse parabolic double-barrier structure

M Bati, S Sakiroglu, I Sokmen   

  1. 1. Physics Department, Faculty of Science, Dokuz Eylül University, 35390 İzmir, Turkey;
    2. Physics Department, Graduate School of Natural and Applied Sciences, Dokuz Eylül University, 35390 İzmir, Turkey;
    3. Physics Department, Faculty of Arts and Sciences, Recep Tayyip Erdoğan University, 53100 Rize, Turkey
  • 收稿日期:2015-11-12 修回日期:2016-02-16 出版日期:2016-05-05 发布日期:2016-05-05
  • 通讯作者: M Bati E-mail:m.bati@deu.edu.tr

Electron transport in electrically biased inverse parabolic double-barrier structure

M Bati1,2,3, S Sakiroglu1, I Sokmen1   

  1. 1. Physics Department, Faculty of Science, Dokuz Eylül University, 35390 İzmir, Turkey;
    2. Physics Department, Graduate School of Natural and Applied Sciences, Dokuz Eylül University, 35390 İzmir, Turkey;
    3. Physics Department, Faculty of Arts and Sciences, Recep Tayyip Erdoğan University, 53100 Rize, Turkey
  • Received:2015-11-12 Revised:2016-02-16 Online:2016-05-05 Published:2016-05-05
  • Contact: M Bati E-mail:m.bati@deu.edu.tr

摘要: A theoretical study of resonant tunneling is carried out for an inverse parabolic double-barrier structure subjected to an external electric field. Tunneling transmission coefficient and density of states are analyzed by using the non-equilibrium Green's function approach based on the finite difference method. It is found that the resonant peak of the transmission coefficient, being unity for a symmetrical case, reduces under the applied electric field and depends strongly on the variation of the structure parameters.

关键词: inverse parabolic double-barrier structure, resonant tunneling, non-equilibrium Green's function, electric field

Abstract: A theoretical study of resonant tunneling is carried out for an inverse parabolic double-barrier structure subjected to an external electric field. Tunneling transmission coefficient and density of states are analyzed by using the non-equilibrium Green's function approach based on the finite difference method. It is found that the resonant peak of the transmission coefficient, being unity for a symmetrical case, reduces under the applied electric field and depends strongly on the variation of the structure parameters.

Key words: inverse parabolic double-barrier structure, resonant tunneling, non-equilibrium Green's function, electric field

中图分类号:  (Electronic transport in nanoscale materials and structures)

  • 73.63.-b
73.40.Gk (Tunneling) 85.30.De (Semiconductor-device characterization, design, and modeling)