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cond-mat.supr-con2025
Fundamental limits on the electron-phonon coupling and superconducting
Dmitrii V. Semenok, Boris L. Altshuler, Emil A. Yuzbashyan
Fundamental upper bounds on the electron-phonon interaction strength and superconducting transition temperature in metals are established based on the intrinsic instability o…
cond-mat.supr-con2025
Nontrivial saddle points for spectral form factors of flat band superconductors
Sankalp Gaur, Emil A. Yuzbashyan, Victor Gurarie
We derive the spectral form factor of a flat band superconductor in two different ways. In the first approach, we diagonalize the Hamiltonian of this system exactly and numerically…