Detection of the Electron Spin Resonance of Two-Dimensional Electrons at Large Wave Vectors

DOI to cite this document:: 10.5283/epub.1805

Kukushkin, I. ; Smet, J. ; Abergel, D.

; Fal'kov, V.

; Wegscheider, Werner ; Klitzing, Klaus von

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Date of publication of this fulltext: 05 Aug 2009 13:33

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Abstract

We have investigated the electron spin resonance at nonzero wave vector in GaAs single quantum wells by combining the virtues of high frequency surface acoustic wave generation to produce excitations with large wave numbers with a sensitive optical scheme to detect resonant absorption. The observed large deviations from the single particle Zeeman energy are attributed to the exchange interaction. ...