Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunable spin/charge Kondo effect at a double superconducting island
  connected to two spinless quantum wires   We propose that a pertinently engineered double superconducting island
connected to two spinless one-dimensional conducting leads can work as a
tunable (iso)spin Kondo and charge Kondo system, with the lead index regarded
as an effective isospin degree of freedom. We evidence how, by tuning a single
gate voltage applied to the island, it is possible to make the system switch
from the (iso)spin Kondo to the charge-Kondo phase, passing across an
intermediate phase, in which the Kondo impurity is effectively irrelevant for
the low-temperature behavior of the system.
  Eventually, we evidence how to probe the various phases by measuring the ac
conductance tensor of our system, by emphasizing the features that should allow
to identify the onset of the so far quite elusive "charge-2" charge-Kondo
effect.

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The categories of this paper are: comp-gas
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th