Direct observation of nonequilibrium spin population in quasi-one-dimensional nanostructures

Tse-Ming Chen, A. C. Graham, M. Pepper, I. Farrer, D. Anderson, G. A.C. Jones, D. A. Ritchie

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Observation of the interplay between interacting energy levels of two spin species is limited by the difficulties in continuously tracking energy levels and thus leaves spin transport in quantum wires still not well understood. We present a dc conductance feature in the nonequilibrium transport regime, a direct indication that the first one-dimensional subband is filled mostly by one spin species only. How this anomalous spin population changes with magnetic field and source-drain bias is directly measured. We show the source-drain bias changes spin polarization in semiconductor nanowires, providing a fully electrical method for the creation and manipulation of spin polarization as well as spin-polarized currents.

Original languageEnglish
Pages (from-to)2330-2334
Number of pages5
JournalNano letters
Volume10
Issue number7
DOIs
Publication statusPublished - 2010 Jul 14

Fingerprint

Spin polarization
Electron energy levels
Nanostructures
Semiconductor quantum wires
Nanowires
Semiconductor materials
Magnetic fields
energy levels
polarization
quantum wires
leaves
manipulators
indication
nanowires
magnetic fields

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Chen, T-M., Graham, A. C., Pepper, M., Farrer, I., Anderson, D., Jones, G. A. C., & Ritchie, D. A. (2010). Direct observation of nonequilibrium spin population in quasi-one-dimensional nanostructures. Nano letters, 10(7), 2330-2334. https://doi.org/10.1021/nl903314j
Chen, Tse-Ming ; Graham, A. C. ; Pepper, M. ; Farrer, I. ; Anderson, D. ; Jones, G. A.C. ; Ritchie, D. A. / Direct observation of nonequilibrium spin population in quasi-one-dimensional nanostructures. In: Nano letters. 2010 ; Vol. 10, No. 7. pp. 2330-2334.
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Chen, T-M, Graham, AC, Pepper, M, Farrer, I, Anderson, D, Jones, GAC & Ritchie, DA 2010, 'Direct observation of nonequilibrium spin population in quasi-one-dimensional nanostructures', Nano letters, vol. 10, no. 7, pp. 2330-2334. https://doi.org/10.1021/nl903314j

Direct observation of nonequilibrium spin population in quasi-one-dimensional nanostructures. / Chen, Tse-Ming; Graham, A. C.; Pepper, M.; Farrer, I.; Anderson, D.; Jones, G. A.C.; Ritchie, D. A.

In: Nano letters, Vol. 10, No. 7, 14.07.2010, p. 2330-2334.

Research output: Contribution to journalArticle

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AU - Chen, Tse-Ming

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AU - Pepper, M.

AU - Farrer, I.

AU - Anderson, D.

AU - Jones, G. A.C.

AU - Ritchie, D. A.

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