51 citations · 118 across the 9 of their papers we have counts for
4 papers · 1 filter
Semi-classical theory of bipolaronic superconductivity in a bond-modulated electron-phonon model
Kyung-Su Kim, Zhaoyu Han, John Sous
We analyze the transition temperature of bipolaronic superconductivity in a bond Su-Schrieffer-Heeger (bond-SSH) model -- also known as a bond Peierls model -- where the elec…
Dynamical defects in a two-dimensional Wigner crystal: self-doping and kinetic magnetism
Kyung-Su Kim, Ilya Esterlis, Chaitanya Murthy +1
We study the quantum dynamics of interstitials and vacancies in a two-dimensional Wigner crystal (WC) using a semi-classical instanton method that is asymptotically exact at low de…
Two-fluid theory of composite bosons and fermions and the quantum Hall proximity effect
Zhaoyu Han, Kyung-Su Kim, Steven A. Kivelson +1
We propose a two-fluid description of fractional quantum Hall systems, in which one component is a condensate of composite bosons and the other a Fermi liquid formed by composite f…
Exact hole-induced flavor-singlets in certain Hubbard models
Kyung-Su Kim, Hosho Katsura
We prove that the motion of a single hole induces flavor-singlets in the (Fermi) Hubbard model on a Husimi-like tree graph. The result is also generalize…