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Published in 2021 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2021.01.009
Abstract: Abstract We obtain the superfluid weight and Berezinskii-Kosterlitz-Thouless (BKT) transition temperature for highly unconventional superconducting states with the coexistence of chiral d-wave superconductivity, charge density waves and pair density waves in the strained graphene. Our…
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Keywords:
transition temperature;
strained graphene;
temperature;
weight berezinskii ... See more keywords
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Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.174517
Abstract: We calculate the superfluid weight and the polarization amplitude for the one-dimensional bosonic Hubbard model focusing on the strong-coupling regime. Other than analytic calculations we apply two methods: variational Monte Carlo based on the Baeriswyl…
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Keywords:
model;
superfluid;
superfluid weight;
polarization amplitude ... See more keywords
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Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.024515
Abstract: We present a theory of the superfluid weight in multiband attractive Hubbard models within the Bardeen-Cooper-Schrieffer (BCS) mean-field framework. We show how to separate the geometric contribution to the superfluid weight from the conventional one,…
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Keywords:
berry curvature;
geometry;
superfluid weight;