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Electron spin resonance on a 2-dimensional electron gas in a single AlAs quantum well

M. Schulte·J. G. S. Lok·G. Denninger·W. Dietsche
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Abstract

Direct electron spin resonance (ESR) on a high mobility two dimensional electron gas in a single AlAs quantum well reveals an electronic $g$-factor of 1.991 at 9.35 GHz and 1.989 at 34 GHz with a minimum linewidth of 7 Gauss. The ESR amplitude and its temperature dependence suggest that the signal originates from the effective magnetic field caused by the spin orbit-interaction and a modulation of the electron wavevector caused by the microwave electric field. This contrasts markedly to conventional ESR that detects through the microwave magnetic field.

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M. Schulte, J. G. S. Lok, G. Denninger, W. Dietsche. 2005-02-18. Electron spin resonance on a 2-dimensional electron gas in a single AlAs quantum well. https://doi.org/10.1103/physrevlett.94.137601

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