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Superconductivity, pseudogap, and phase separation in topological flat bands: a quantum Monte Carlo study
Johannes S. Hofmann, Erez Berg, Debanjan Chowdhury
We study a two-dimensional model of an isolated narrow topological band at partial filling with local attractive interactions. Numerically exact quantum Monte Carlo calculations sh…
Tests of nematic-mediated superconductivity applied to BaSrNiAs
Samuel Lederer, Erez Berg, Eun-Ah Kim
In many unconventional superconductors, nematic quantum fluctuations are strongest where the critical temperature is highest, inviting the conjecture that nematicity plays an impor…
Intrinsic superconducting instabilities of a solvable model for an incoherent metal
Debanjan Chowdhury, Erez Berg
We construct a family of translationally invariant lattice models with a large number () of orbitals at every site coupled together via single electron tunneling. By tuning the…
Scattering mechanisms and electrical transport near an Ising nematic quantum critical point
Xiaoyu Wang, Erez Berg
Electrical transport properties near an electronic Ising-nematic quantum critical point in two dimensions are of both theoretical and experimental interest. In this work, we derive…