Generalized path integral method for Elliott-Yafet spin relaxations in quantum wells and narrow wires

Jengjan Tsai*, Cheng-Hung Chang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We generalized the semiclassical path integral method originally used in the DyakonovPerel mechanism to study the spin relaxation of the ElliottYafet mechanism in low-dimensional systems. In quantum wells, the spin properties calculated by this method confirmed the experimental results. In two-dimensional narrow wires, size and impurity effects on the ElliottYafet relaxation were predicted, including the wire-width-dependent relaxation time, the polarization evolution on the sample boundaries, and the relaxation behavior during the diffusiveballistic transition. These properties were compared with those of the DyakonovPerel relaxation calculated under similar conditions. For ballistic narrow wires, we derived an exact relation between the ElliottYafet relaxation time and the wire width, which confirmed the above simulations.

Original languageEnglish
Article number075801
JournalJournal of Physics Condensed Matter
Volume24
Issue number7
DOIs
StatePublished - 22 Feb 2012

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