2 papers
cond-mat.dis-nn2025
A Replica Stoner Theory for Dirty Ferromagnets
Wenzhe Deng, Tai Kai Ng
This paper investigates the effect of disorder on a ferromagnetic metal with repulsive interactions. We assume that, in the clean limit, the ferromagnetic state can be described by…
cond-mat.supr-con2025
A Replica-BCS theory for dirty superconductors
Yat Fan Lau, Tai Kai Ng
In this paper, we revisit the problem of dirty superconductors using a replica-symmetric BCS (RS-BCS) theory. We apply the RS-BCS theory to dirty superconductor grains of size $L^d…