Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Signatures of Topological Transitions in the Spin Susceptibility of
  Josephson Junctions   We theoretically investigate how the spin susceptibility of a planar
Josephson junction is affected when the system transits into the topological
superconducting state. We show that the magnetic flux and magnetic field
dependence of the spin susceptibility closely maps the phase diagram of the
system. In the absence of an external magnetic flux the system can self-tune
into the topological superconducting state by minimizing its free energy.
Self-tuned topological transitions are accompanied by sharp peaks in the spin
susceptibility, which can therefore be use as measurable fingerprints for
detecting the topological superconducting state. Away from the peaks, the
amplitude of the spin susceptibility can provide qualitative information about
the relative size of the topological gap. The signatures in the spin
susceptibility are robust, even in junctions with narrow superconducting leads,
where critical current minima may no longer serve as an indication of
topological phase transitions. Numerical simulations are complemented with
simplified analytical models capable of capturing the main features predicted
for the spin susceptibility behavior. The predicted results could be
particularly relevant for future experiments on realization and detection of
the topological superconducting state in planar Josephson junctions.

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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int