Tunable polarization of spin polarized current by magnetic field

Sungjung Joo, Jinseo Lee, Taeyueb Kim, Kungwon Rhie, Jinki Hong, Kyung Ho Shin, Kihyun Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The spin polarization of a high g-factor bulk semiconductor is theoretically investigated in the presence of a magnetic field parallel to a driving electric field. Calculations have been carried out using the energy-dependent relaxation time approximation in association with spin-flip scattering. As the magnitude of the magnetic field increases, the spin-polarized current alternates between the spin-up and spin-down states for the low spin-scattering system. This implies that the current polarization can be tuned by controlling the magnetic field strength, suggesting possible applications to spintronic devices. An experimental method for investigating alternative current polarization is also considered.

Original languageEnglish
Pages (from-to)568-572
Number of pages5
JournalCurrent Applied Physics
Volume11
Issue number3
DOIs
Publication statusPublished - 2011 May 1
Externally publishedYes

Fingerprint

Polarization
Magnetic fields
polarization
magnetic fields
Scattering
Magnetoelectronics
Spin polarization
Relaxation time
Electric fields
Semiconductor materials
scattering
field strength
relaxation time
electric fields
approximation
energy

Keywords

  • g-factor
  • HgCdTe
  • Spin polarization
  • Spin-flip
  • Zeeman

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Tunable polarization of spin polarized current by magnetic field. / Joo, Sungjung; Lee, Jinseo; Kim, Taeyueb; Rhie, Kungwon; Hong, Jinki; Shin, Kyung Ho; Kim, Kihyun.

In: Current Applied Physics, Vol. 11, No. 3, 01.05.2011, p. 568-572.

Research output: Contribution to journalArticle

Joo, S, Lee, J, Kim, T, Rhie, K, Hong, J, Shin, KH & Kim, K 2011, 'Tunable polarization of spin polarized current by magnetic field', Current Applied Physics, vol. 11, no. 3, pp. 568-572. https://doi.org/10.1016/j.cap.2010.09.018
Joo, Sungjung ; Lee, Jinseo ; Kim, Taeyueb ; Rhie, Kungwon ; Hong, Jinki ; Shin, Kyung Ho ; Kim, Kihyun. / Tunable polarization of spin polarized current by magnetic field. In: Current Applied Physics. 2011 ; Vol. 11, No. 3. pp. 568-572.
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