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arXiv · 1904.11770

Anti-Localization in Oxides: Effective Spin-3/2 Model

Patrick Seiler·Elias Lettl·Daniel Braak·Thilo Kopp
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Abstract

Weak anti-localization offers an experimental tool to address spin--orbit coupling of two-dimensional oxide surfaces and interfaces via magneto-transport. To overcome the shortcomings of the formulation for single-band spin-1/2 electrons, we consider an effective three-band model that allows a decomposition into a pseudo-spin representation 1/2+3/2. Whereas the well-established spin-1/2 transport signature results from the singlet and triplet sectors in the Cooperon equation, a new structure originates from the quintet and septet sectors generated by the spin 3/2x3/2 representation.

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Patrick Seiler, Elias Lettl, Daniel Braak, Thilo Kopp. 2019-04-26. Anti-Localization in Oxides: Effective Spin-3/2 Model. https://doi.org/10.1103/physrevb.100.121404

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