open access

https://hdl.handle.net/2115/89320

AC response of spin-pseudospin current in a double quantum well

英語

2022-05-24

IOP Publishing

Japanese Journal of Applied Physics

61(6)

63002

The spin Hall effect due to the skew scattering is studied using the Boltzmann equation in a double quantum well when the inplane electric field with angular frequency omega is applied. The two wells have opposite signs of impurity potential so that the skew-scattering spin Hall current is antiparallel and carries a pseudospin, which is formed by divide L and divide R, the ground states of the two wells. The pseudospin precession is induced by the interwell tunneling in the strength of PLANCK CONSTANT OVER TWO PI omega (SAS), the energy difference between the symmetric and antisymmetric states. It is found that the dynamics of the spin-pseudospin current, described by the pseudospin analogue of the Bloch equation, is equivalent in form to the classical cyclotron resonance. Consequently, the antiparallel spin Hall current exhibits the resonance peak at omega similar to omega (SAS). Such spin-pseudospin coupling is expected to be useful in controlling the spin polarization in many electronic systems.

学術雑誌論文

Accepted Manuscript

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

This is the Accepted Manuscript version of an article accepted for publication in Applied Physics Express. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.35848/1347-4065/ac6644.

0021-4922