Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session Q16: Phenomenological Theories and Models of Superconductors
3:00 PM–5:00 PM,
Wednesday, March 6, 2024
Room: M100G
Sponsoring
Unit:
DCMP
Chair: Niraj Aryal, Brookhaven National Laboratory
Abstract: Q16.00009 : The Ginzburg-Landau theory of flat-band superconductors with quantum metric
4:36 PM–4:48 PM
Presenter:
Shuai CHEN
(Hong Kong University of Science and Technology)
Authors:
Shuai CHEN
(Hong Kong University of Science and Technology)
K. T. Law
(Hong Kong University of Science and Technology)
the coherence length consists of both the quantum metric and conventional parts. We find that even the conventional parts are different between narrow-band systems and high-dispersive systems. Applying the theory to TBG, we calculated the superconducting coherence length and the upper critical fields.
The results match the experimental ones well without fine-tuning the parameters.
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