3 papers
cond-mat.supr-con2024
Non-BCS behavior of the pairing susceptibility near the onset of superconductivity in a quantum-critical metal
Artem Abanov, Shang-Shun Zhang, Andrey Chubukov
We analyze the dynamical pairing susceptibility at in a quantum-critical metal, where superconductivity emerges out of a non-Fermi liquid ground state once the…
cond-mat.str-el2024
Applicability of Eliashberg theory for systems with electron-phonon and electron-electron interaction: a comparative analysis
Shang-Shun Zhang, Zachary M. Raines, Andrey V. Chubukov
We present a comparative analysis of the validity of Eliashberg theory for the cases of fermions interacting with an Einstein phonon and with soft nematic fluctuations near an Isin…
cond-mat.supr-con2023
Superfluid stiffness within Eliashberg theory: the role of vertex corrections
Zachary M. Raines, Shang-Shun Zhang, Andrey V. Chubukov
In this work we consider the superfluid stiffness of a generically non-Galilean invariant interacting system and investigate under what conditions the stiffness may nonetheless app…