Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zeeman splitting via spin-valley-layer coupling in bilayer MoTe2   Atomically thin transition metal dichalcogenides (TMDs) possess coupling of
spin and valley degrees of freedom, making them promising for
spin-valleytronics. ln monolayer TMDs, the emission helicity is locked to the
valleys as a consequence of spin-orbit coupling and inversion symmetry
breaking, leading to a valley analog of Zeeman effect in presence of
out-of-plane magnetic field. As inversion symmetry is recovered in bilayers,
the emission helicity should no longer be locked to the valleys. Here we show
that Zeeman splitting, however, still persists in bilayers, as a result of an
additional degree of freedom viz., the layer pseudospin and spin-valley-layer
locking. In contrast to monolayer, Zeeman splitting here exists without lifting
valley degeneracy. The degree of circularly polarized photoluminescence can be
tuned with magnetic field from $-27\%$ to $27\%$. Our results demonstrate the
control of degree of freedom in bilayer with magnetic field, which, together
with previous electric field control, makes bilayer a promising platform for
spin-valley quantum gates based on magnetoelectric effects.

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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: math
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The categories of this paper are: funct-an