Mapping spin-orbit splitting in strained (In,Ga)As epilayers

Article

关键词: V COMPOUND SEMICONDUCTORS;    MAGNETIC-FIELDS;    RESONANCE;   

DOI  :  10.1103/PhysRevB.82.081304

来源: SCIE

【 摘 要 】

Time-resolved and spatially resolved Faraday rotation spectroscopy is used to measure the magnitude and direction of the momentum-dependent spin splitting in strained InGaAs epilayers. The epilayers are coherently strained and therefore designed to reduce inhomogeneous effects related to strain relaxation. Measurements of momentum-dependent spin splitting as a function of electron spin drift velocity along [100], [010], [110], and [1 (1) over bar0] directions enable separation of isotropic and anisotropic effective magnetic fields that arise from uniaxial and biaxial strain along < 110 >. We find that the anisotropic and isotropic strain-induced effective magnetic fields are comparable in magnitude, contrary to previous predictions.

【 授权许可】

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