A1 Journal article (refereed)
Weak localization at arbitrary disorder strength in systems with generic spin-dependent fields (2024)

Hijano, A., Ilić, S., & Bergeret, F. S. (2024). Weak localization at arbitrary disorder strength in systems with generic spin-dependent fields. Physical Review Research, 6(2), Article 023100. https://doi.org/10.1103/PhysRevResearch.6.023100

JYU authors or editors

Publication details

All authors or editors: Hijano, Alberto; Ilić, Stefan; Bergeret, F. Sebastián

Journal or series: Physical Review Research

eISSN: 2643-1564

Publication year: 2024

Publication date: 29/04/2024

Volume: 6

Issue number: 2

Article number: 023100

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevResearch.6.023100

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/94924

Publication is parallel published: https://doi.org/10.48550/arXiv.2311.01148

Abstract

We present a theory of weak localization (WL) in the presence of generic spin-dependent fields, including any type of spin-orbit coupling, Zeeman fields, and nonhomogeneous magnetic textures. We go beyond the usual diffusive approximation, considering systems with short-range disorder of arbitrary strength and obtain a compact expression for the weak localization (WL) correction to the conductivity in terms of the singlet-triplet polarization operator in momentum space. The latter can be directly related to the solution of the quasiclassical Eilenberger equation for superconducting systems. This formulation presents an intuitive framework to explore how the interplay of various spin-dependent fields drives weak (anti) localization. We apply our results to study in-plane magnetoconductivity in systems with spin-orbit coupling and in newly discovered altermagnets. Our results enable straightforward calculation of the WL conductivity at arbitrary disorder strength, which can be particularly useful for interpreting experiments on high-mobility samples.

Keywords: condensed matter physics; spin (quantum mechanics)

Free keywords: spin-orbit coupling; spintronics; weak antilocalization; weak localization; condensed matter; materials & applied physics

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