Eliashberg equations derived from the functional renormalization group
Carsten Honerkamp, Manfred Salmhofer
Abstract
We describe how the fermionic functional renormalization group (fRG) flow of a Cooper+forward scattering problem can be continued into the superconducting state. This allows us to reproduce from the fRG flow the fundamental equations of the Eliashberg theory for superconductivity at all temperatures including the symmetry-broken phase. We discuss possible extensions of this approach like the inclusion of vertex corrections.
Create a lesson
Related papers
Constraining the Superconducting Gap of Monolayer FeSe/SrTiO3 via Statistical Analysis and Tip-Height-Dependent Tunneling Spectroscopy
Dongwon Shin, Xiyou Peng, Kaleb McClure et al.
Acoustic damping limits superfluid helium as a thermal bath for mechanical resonators
Yunhu Huang, Mehri Ebrahimi, Alireza Rashedi et al.
Superinsulation, electric confinement in condensed matter
M. Cristina Diamantini, Carlo A. Trugenberger
Observation of Superconductivity in a Cu-Rich High-Entropy Alloy
Arumugam Sonachalam
Imaging the Current Distribution in Superconducting Transition-Edge Sensors with Scanning SQUID Microscopy
Samantha Walker, Austin Kaczmarek, Douglas A. Bennett et al.
Asymmetric Little--Parks Oscillations as a Probe of Coupled Pairing Channels in Surface-Superconducting PtBi2PtBi2
Yuriy Yerin, Stefan-Ludwig Drechsler, Carsten Timm et al.