Exact theory for superconductivity in a doped Mott insulator

PW Phillips, L Yeo, EW Huang - Nature Physics, 2020 - nature.com
Because the cuprate superconductors are doped Mott insulators, it would be advantageous
to solve even a toy model that exhibits both Mottness and superconductivity. We consider …

Effectively tuning the quantum Griffiths phase by controllable quantum fluctuations

B Wang, G Ying, L Guo, Z Lin, H Liu, C Zeng - Science Advances, 2024 - science.org
Quantum Griffiths phase (QGP), marked by a quantum Griffiths singularity with a divergent
effective critical exponent, has garnered considerable attention in the realm of …

Emergence of quantum Griffiths singularity in disordered TiN thin films

S Yadav, MP Saravanan, S Sahoo - Communications Physics, 2024 - nature.com
The association of quantum Griffiths singularity (QGS) to the magnetic-field-induced
superconductor-metal transition predicts the unconventional diverging behaviour of …

Dark photon vortex formation and dynamics

WE East, J Huang - Journal of High Energy Physics, 2022 - Springer
A bstract We study the formation and evolution of vortices in U (1) dark photon dark matter
and dark photon clouds that arise through black hole superradiance. We show how the …

Disorder effects on quantum transport and quantum phase transition in low-dimensional superconducting and topological systems

H Ji, H Liu, H Jiang, XC **e - Advances in Physics: X, 2021 - Taylor & Francis
Disorder effects inevitably exist in realistic samples, manifesting in various physical
properties. In this paper, we review the recent progress in understanding the disorder effects …

Test for BCS-BEC crossover in the cuprate superconductors

Q Chen, Z Wang, R Boyack, K Levin - npj Quantum Materials, 2024 - nature.com
In this paper we address the question of whether high-temperature superconductors have
anything in common with BCS-BEC crossover theory. Towards this goal, we present a …

Natural width of the superconducting transition in epitaxial TiN films

E Baeva, A Kolbatova, N Titova, S Saha… - Superconductor …, 2024 - iopscience.iop.org
We investigate the effect of various fluctuation mechanisms on the DC resistance in
superconducting (SC) devices based on epitaxial titanium nitride (TiN) films. The samples …

Broadened quantum critical ground state in a disordered superconducting thin film

K Ienaga, Y Tamoto, M Yoda, Y Yoshimura… - Nature …, 2024 - nature.com
A superconductor-insulator transition (SIT) in two dimensions is a prototypical quantum
phase transition (QPT) with a clear quantum critical point (QCP) at zero temperature (T= 0) …

Superconductivity from Luttinger surfaces: Emergent Sachdev-Ye-Kitaev physics with infinite-body interactions

C Setty - Physical Review B, 2021 - APS
The pairing of two electrons on a Fermi surface due to an infinitesimal attraction between
them always results in a superconducting instability at zero temperature (T= 0). The …

Anomalous quantum Griffiths singularity in ultrathin crystalline lead films

Y Liu, Z Wang, P Shan, Y Tang, C Liu, C Chen… - Nature …, 2019 - nature.com
Superconductor-insulator/metal transition (SIT/SMT) represents a prototype of quantum
phase transition, where quantum fluctuation plays a dominant role and dramatically changes …