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arXiv · 1408.2121

Spin-valley relaxation and quantum transport regimes in two-dimensional transition metal dichalcogenides

Hector Ochoa·Francesca Finocchiaro·Francisco Guinea·Vladimir I. Fal'ko
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Abstract

Quantum transport and spintronics regimes are studied in p- and n-doped atomic layers of hexagonal transition metal dichalcogenides (TMDCs), subject to the interplay between the valley structure and spin-orbit coupling. We find how spin relaxation of carriers depends on their areal density and show that it vanishes for holes near the band edge, leading to the density-independent spin diffusion length, and we develop a theory of weak localisation/antilocalisation, describing the crossovers between the orthogonal, double-unitary and symplectic regimes of quantum transport in TMDCs.

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Hector Ochoa, Francesca Finocchiaro, Francisco Guinea, Vladimir I. Fal'ko. 2014-08-09. Spin-valley relaxation and quantum transport regimes in two-dimensional transition metal dichalcogenides. https://doi.org/10.1103/physrevb.90.235429

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