[HTML][HTML] Superconductivity and interfaces

J Maggiora, X Wang, R Zheng - Physics Reports, 2024 - Elsevier
The interfaces between superconductors and other materials have long been established as
being an important part in the exploration of new physics to aid in our understanding of …

Failure of topological invariants in strongly correlated matter

J Zhao, P Mai, B Bradlyn, P Phillips - Physical review letters, 2023 - APS
We show exactly that standard “invariants” advocated to define topology for noninteracting
systems deviate strongly from the Hall conductance whenever the excitation spectrum …

Topological Mott insulator at quarter filling in the interacting Haldane model

P Mai, BE Feldman, PW Phillips - Physical Review Research, 2023 - APS
While the recent advances in topology have led to a classification scheme for electronic
bands described by the standard theory of metals, a similar scheme has not emerged for …

1/4 is the new 1/2 when topology is intertwined with Mottness

P Mai, J Zhao, BE Feldman, PW Phillips - Nature communications, 2023 - nature.com
In non-interacting systems, bands from non-trivial topology emerge strictly at half-filling and
exhibit either the quantum anomalous Hall or spin Hall effects. Here we show using …

Ground state stability, symmetry, and degeneracy in Mott insulators with long-range interactions

D Manning-Coe, B Bradlyn - Physical Review B, 2023 - APS
Recently, models with long-range interactions—known as Hatsugai-Kohmoto (HK) models—
have emerged as a promising tool to study the emergence of superconductivity and topology …

Symmetry constraints and spectral crossing in a Mott insulator with Green's function zeros

C Setty, S Sur, L Chen, F **e, H Hu, S Paschen… - Physical Review …, 2024 - APS
Lattice symmetries are central to the characterization of electronic topology. Recently, it was
shown that Green's function eigenvectors form a representation of the space group. This …

Solvable periodic Anderson model with infinite-range Hatsugai-Kohmoto interaction: Ground-states and beyond

Y Zhong - Physical Review B, 2022 - APS
In this paper we introduce a solvable two-orbital (two-band) model with an infinite-range
Hatsugai-Kohmoto interaction, which serves as a modified periodic Anderson model. Its …

Two-stage superconductivity in the Hatsugai–Kohomoto-BCS model

Y Li, V Mishra, Y Zhou, FC Zhang - New Journal of Physics, 2022 - iopscience.iop.org
Superconductivity in strongly correlated electrons can emerge out from a normal state that is
beyond the Landau's Fermi liquid paradigm, often dubbed as' non-Fermi liquid'. While the …

Proof of a stable fixed point for strongly correlated electron matter

J Zhao, G La Nave, PW Phillips - Physical Review B, 2023 - APS
We establish the Hatsugai-Kohmoto model as a stable quartic fixed point (distinct from
Wilson-Fisher) by computing the β function in the presence of perturbing local interactions …

Topological phase transition without single particle gap closing in strongly correlated systems

P Mai, J Zhao, TA Maier, B Bradlyn, PW Phillips - Physical Review B, 2024 - APS
We show here two models where changing topology does not necessarily close the bulk
insulating charge gap as demanded in the standard noninteracting picture. From extensive …