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arXiv · 1302.3627

Transport Theory of Monolayer Transition-Metal Dichalcogenides through Symmetry

Yang Song·Hanan Dery
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Abstract

We present a theory that elucidates the major momentum and spin relaxation processes for electrons, holes and hot excitons in monolayer transition-metal dichalcogenides. We expand on spin flips induced by flexural phonons and show that the spin relaxation is ultrafast for electrons in free-standing membranes while being mitigated in supported membranes. This behavior due to interaction with flexural phonons is universal in two-dimensional membranes that respect mirror symmetry and it leads to a counterintuitive inverse relation between mobility and spin relaxation.

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Yang Song, Hanan Dery. 2013-02-14. Transport Theory of Monolayer Transition-Metal Dichalcogenides through Symmetry. https://doi.org/10.1103/physrevlett.111.026601

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