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arXiv · 1405.4533

Magnetotransport properties of two-dimensional fermions with $k$-cubic Rashba spin-orbit interaction

Alestin Mawrie·Tutul Biswas·Tarun Kanti Ghosh
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Abstract

The spin-orbit interaction in heavy hole gas formed at $p$-doped semiconductor heterojunctions and electron gas at {\mbox SrTiO}${}_3$ surfaces is cubic in momentum. Here we report magnetotransport properties of k-cubic Rashba spin-orbit coupled two-dimensional fermionic systems. We study longitudinal (Shubnikov-de Haas (SdH) oscillations) and Hall component of the resistivity tensor analytically as well as numerically. The longitudinal resistivity shows beating pattern due to different SdH oscillation frequencies $ f_{\pm} $ for spin-up and spin-down fermions. We propose empirical forms of $ f_{\pm} $ as exact expressions are not available, which are being used to find location of the beating nodes. The beating nodes and the number of oscillations between any two successive nodes obtained from exact numerical results are in excellent agreement with those calculated from the proposed empirical form. In the Hall resistivity, an additional Hall plateau appears in between two conventional ones as spin-orbit coupling constant increases. The width of this additional plateau increases with spin-orbit coupling constant.

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Alestin Mawrie, Tutul Biswas, Tarun Kanti Ghosh. 2014-09-12. Magnetotransport properties of two-dimensional fermions with $k$-cubic Rashba spin-orbit interaction. https://doi.org/10.1088/0953-8984%2F26%2F40%2F405301

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