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arXiv · 2107.02819

Spin-valley Silin modes in graphene with substrate-induced spin-orbit coupling

Zachary M. Raines·Dmitrii L. Maslov·Leonid I. Glazman
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Abstract

In the presence of external magnetic field the Fermi-liquid state supports oscillatory spin modes known as Silin modes. We predict the existence of the generalized Silin modes in a multivalley system, monolayer graphene. A gauge- and Berry-gauge- invariant kinetic equation for a multivalley Fermi liquid is developed and applied to the case of graphene with extrinsic spin-orbit coupling (SOC). The interplay of SOC and Berry curvature allows for the excitation of generalized Silin modes in the spin and valley-staggered-spin channels via an AC electric field. The resonant contributions from these modes to the optical conductivity are calculated.

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Zachary M. Raines, Dmitrii L. Maslov, Leonid I. Glazman. 2021-07-06. Spin-valley Silin modes in graphene with substrate-induced spin-orbit coupling. https://doi.org/10.1103/physrevb.105.l201201

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