Phase fluctuations in conventional superconductors

P Raychaudhuri, S Dutta - Journal of Physics: Condensed Matter, 2021 - iopscience.iop.org
Abstract Within the Bardeen–Cooper–Schrieffer (BCS) theory, superconductivity is entirely
governed by the pairing energy scale, which gives rise to the superconducting energy gap …

Two-level systems in superconducting quantum devices due to trapped quasiparticles

SE De Graaf, L Faoro, LB Ioffe, S Mahashabde… - Science …, 2020 - science.org
A major issue for the implementation of large-scale superconducting quantum circuits is the
interaction with interfacial two-level system (TLS) defects that lead to qubit parameter …

Sharpness of the Berezinskii-Kosterlitz-Thouless transition in disordered NbN films

A Weitzel, L Pfaffinger, I Maccari, K Kronfeldner… - Physical Review Letters, 2023 - APS
We present a comprehensive investigation of the Berezinskii-Kosterlitz-Thouless transition
in ultrathin strongly disordered NbN films. Measurements of resistance, current-voltage …

First-order quantum breakdown of superconductivity in an amorphous superconductor

T Charpentier, D Perconte, S Léger, KR Amin… - Nature Physics, 2025 - nature.com
Continuous quantum phase transitions are widely assumed and frequently observed in
various systems of quantum particles or spins. Their characteristic trait is a second-order …

Enhanced amplitude for superconductivity due to spectrum-wide wave function criticality in quasiperiodic and power-law random hop** models

X Zhang, MS Foster - Physical Review B, 2022 - APS
We study the interplay of superconductivity and a wide spectrum of critical (multifractal) wave
functions (“spectrum-wide quantum criticality,” SWQC) in the one-dimensional Aubry-André …

Some new aspects of fractal superconductivity

RA El-Nabulsi, W Anukool - Physica B: Condensed Matter, 2022 - Elsevier
The purpose of this paper is to develop, in fractal dimension, the semi-quantitative extension
of the Ginzburg-Landau theory of superconductivity. Our theoretical analysis is based on the …

Optical and transport properties of NbN thin films revisited

S Kern, P Neilinger, M Poláčková, M Baránek… - Physical Review B, 2024 - APS
Highly disordered NbN thin films exhibit promising superconducting and optical properties.
Despite extensive study, discrepancies in its basic electronic properties persist. Analysis of …

Quasidisorder-induced topology

MF Madeira, PD Sacramento - Physical Review B, 2022 - APS
We study the effects of quasidisorder and Anderson disorder on a two-dimensional
topological superconductor with an applied external magnetic field. The cases of ap-wave …

Superconducting nanostrip single-photon detectors some fundamental aspects in detection mechanism, technology and performance

AD Semenov - Superconductor Science and Technology, 2021 - iopscience.iop.org
The paper is devoted to several recent rather fundamental achievements in the field of
superconducting nanostrip single-photon detectors which make an impact on understanding …

Multifractal correlations of the local density of states in dirty superconducting films

M Stosiek, F Evers, IS Burmistrov - Physical Review Research, 2021 - APS
Mesoscopic fluctuations of the local density of states encode multifractal correlations in
disordered electron systems. We study fluctuations of the local density of states in a …