Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic-field Induced Topological Transitions and Thermal Conductivity
  in a Generalized Kitaev Model   Recent experiments on Kitaev spin liquid candidate materials reported
non-monotonic behavior of thermal conductivity as a function of magnetic field,
which lead to conflicting interpretations of its origin. Motivated by this
development, we study the magnetic field dependence of thermal conductivity of
a generalized Kitaev model, which allows the phase transitions between
different flux sectors as a function of the magnetic field. The thermal
conductivity due to Majorana fermions shows dip-bump structures as the magnetic
field increases, which is caused by either the transitions between different
flux sectors of Kitaev spin liquids or the topological transitions that change
the Majorana Chern number within the same flux sector. It is shown that the
change of Chern number is closely related to the four-Majorana-fermion
interaction induced by the magnetic field. The non-monotonic behavior in
thermal conductivity emerges at finite temperature, and it becomes weaker when
temperature decreases towards zero. Our model provides a generic mechanism for
the Kitaev spin liquids to develop non-monotonic magnetic-field dependence of
thermal conductivity while the detailed comparison to realistic materials
remains an open question for future investigation.

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The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
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The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con