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Anisotropic Electron Spin Lifetime in (In,Ga)As/GaAs (110) Quantum Wells

L. Schreiber·D. Duda·B. Beschoten·G. Güntherodt·H. -P. Schönherr·J. Herfort
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Abstract

Anisotropic electron spin lifetimes in strained undoped (In,Ga)As/GaAs (110) quantum wells of different width and height are investigated by time-resolved Faraday rotation and time-resolved transmission and are compared to the (001)-orientation. From the suppression of spin precession, the ratio of in-plane to out-of-plane spin lifetimes is calculated. Whereas the ratio increases with In concentration in agreement with theory, a surprisingly high anisotropy of 480 is observed for the broadest quantum well, when expressed in terms of spin relaxation times.

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L. Schreiber, D. Duda, B. Beschoten, G. Güntherodt, H. -P. Schönherr, J. Herfort. 2007-05-30. Anisotropic Electron Spin Lifetime in (In,Ga)As/GaAs (110) Quantum Wells. https://doi.org/10.1103/physrevb.75.193304

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