Quantum size effect and temperature effect on spin-polarized transport in ZnSe/Zn1-xMnxSe multilayers

Yong Guo, Jun Qiang Lu, Zhong Zeng, Qian Wang, Bing Lin Gu, Yoshiyuki Kawazoe

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We present tight-binding Green's function investigations of the influence of quantum sizes and the temperature on spin tunneling transport through a tunable ZnSe/Zn1-xMnxSe multilayers under an external electric field. It is found that the degree of polarization can be significantly induced by the size of the corresponding structure. As the size of the multilayers is increasing, both the transmission spectra and the current density spectra become more complicated and the degree of spin polarization is higher. It is also found that the degree of the spin polarization is drastically reduced as the temperature is increasing.

Original languageEnglish
Pages (from-to)205-215
Number of pages11
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume284
Issue number4-5
DOIs
Publication statusPublished - 2001 Jun 11

Keywords

  • Heterojunctions
  • Semimagnetic semiconductor
  • Spin polarization
  • Tunneling

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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