5 papers
Effects on a metal that is proximately coupled to hyperbolic photon modes
Zhiyu Dong, Patrick A. Lee
The hyperbolic mode (HM) refers to a polariton mode in a polar insulator where the dielectric function is negative in some direction of propagation. Within a frequency window the l…
Berry-Flux-Controlled Cascade of Chiral Superconducting States
Daniil Karuzin, Zhiyu Dong, Leonid Levitov
Motivated by recent interest in chiral superconductivity in narrow bands, we develop a general framework to clarify how band topology and quantum geometry affect superconducting pa…
Superconductivity from spin-canting fluctuations in rhombohedral graphene
Zhiyu Dong, Ãtienne Lantagne-Hurtubise, Jason Alicea
Rhombohedral graphene multilayers host various broken-symmetry metallic phases as well as superconductors whose pairing mechanism and order parameter symmetry remain unsettled. Str…
Numerical evidence for spin chirality emerging from itinerant ferromagnets in bands with Berry curvature
Shuai Yang, Zhiyu Dong, Yan Chen
The behavior of strongly interacting electrons in bands with Berry curvature is a problem of wide interest. In this paper, we study this problem by numerically studying a fluxed Hu…
Chirality-induced pseudo-magnetic fields, flat bands and enhancement of superconductivity
Zhiyu Dong, Leonid Levitov, Patrick A. Lee
Systems in which exchange interactions couple carrier spins to a spin texture with a net chirality exhibit a spin-dependent Aharonov-Bohm effect, where the geometric gauge field an…