Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing Topological Protection of Edge States in Hexagonal Quantum Spin
  Hall Candidate Materials   We analyze the detailed structure of topological edge mode protection
occuring in hexagonal quantum spin Hall (QSH) materials. We focus on
bismuthene, antimonene, and arsenene on a SiC substrate, which, due to their
large bulk gap, may offer new opportunities for room-temperature QSH
applications. While time reversal symmetry is responsible for the principal
symmetry protected character of QSH states, the hexagonal edge terminations
yield further aspects of crystal symmetry which affect the topological
protection. We show that armchair QSH edge states remain gapless under an
in-plane magnetic field in the direction along the edge, a hallmark of their
topological crystalline protection. In contrast, an out-of-plane magnetic field
opens a gap of the order of a few meV within realistic ranges of parameters. We
use these intriguing signatures of armchair QSH edge states to predict
experimentally testable fingerprints of their additional topological
crystalline character and their helicity emerging in tunneling spectroscopy and
ballistic magnetotransport.

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The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
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The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga