Strong anisotropic spin dynamics in narrow n-InGaAs/AlGaAs (110) quantum wells

K. Morita, H. Sanada, S. Matsuzaka, C. Y. Hu, Y. Ohno, H. Ohno

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19 Citations (Scopus)

Abstract

Anisotropic spin dynamics of two-dimensional electrons in strained n-InGaAsAlGaAs (110) quantum wells (QWs) is investigated by a time-resolved Faraday rotation technique. Strong anisotropy of the relaxation time for the electron spins in parallel (τ∥) and perpendicular (τ⊥) to the QWs is observed (τ⊥ τ∥ ∼60) at 150 K as a result of the enhanced D'yakonov-Perel' (DP) spin relaxation mechanism. At 5 K, an anisotropic feature of the spin relaxation time is also observed in the presence of in-plane magnetic field, suggesting that the DP mechanism is effective for low-temperature spin relaxation.

Original languageEnglish
Article number171905
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number17
DOIs
Publication statusPublished - 2005 Oct 24

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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