Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strain-induced bound states in transition-metal dichalcogenide bubbles   We theoretically study the formation of single-particle bound states confined
by strain at the center of bubbles in monolayers of transition-metal
dichalcogenides (TMDs). Bubbles ubiquitously form in two-dimensional crystals
on top of a substrate by the competition between van der Waals forces and the
hydrostatic pressure exerted by trapped fluid. This leads to strong strain at
the center of the bubble that reduces the bangap locally, creating potential
wells for the electrons that confine states inside. We simulate the spectrum
versus the bubble radius for the four semiconducting group VI TMDs, MoS$_2$,
WSe$_2$, WS$_2$ and MoSe$_2$, and find an overall Fock-Darwin spectrum of
bubble bound states, characterised by small deviations compatible with Berry
curvature effects. We analyse the density of states, the state degeneracies,
orbital structure and optical transition rules. Our results show that elastic
bubbles in these materials are remarkably efficient at confining photocarriers.

7
The categories of this paper are: hep-th
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The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
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The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys