Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discovery of charge-4e and charge-6e superconductivity in kagome
  superconductor CsV3Sb5   Superconductivity originates from the condensation of charge-2e Cooper pairs.
Fundamentally new superconducting states due to the condensation of charge-4e
and charge-6e multi-electron bound states, in the absence of the charge-2e
condensate, have been theoretically proposed but so far unobserved
experimentally. Here we report the discovery of the charge-4e and charge-6e
superconductivity in nanopatterned ring devices fabricated using the new
transition-metal kagome lattice superconductor CsV3Sb5. We perform systematic
magneto-transport measurements and observe the quantization of the magnetic
flux in units of h/4e and h/6e in the magnetoresistance oscillations.
Specifically, in the zero-resistance state below the temperature T_c^zero,
magnetoresistance oscillations with period h/2e for charge-2e superconductivity
are detected, as expected from the Little-Parks effect. We find that the h/2e
oscillations are suppressed when the temperature is increased above T_c^zero
and novel resistance oscillations with h/4e periodicity are observed,
indicating the emergence of charge-4e superconductivity. Increasing the
temperature further suppresses the h/4e superconductivity and oscillations with
h/6e periodicity emerge as an incipient charge-6e superconductivity. Our
observations provide direct experimental evidence for the existence of
macroscopic phase coherent paired quantum matter beyond the charge-2e
superconductors described by the Bardeen-Cooper-Schrieffer (BCS) theory, and
reveal new insights into the intertwined and vestigial electronic orders
associated with the primary pair density wave state in kagome superconductors.

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The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: chem-ph
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
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The categories of this paper are: math-ph