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We implement the effects of disorder on a holographic superconductor by introducing a random chemical potential on the boundary. We demonstrate explicitly that increasing disorder leads to the formation of islands where the superconducting…

High Energy Physics - Theory · Physics 2016-11-15 Daniel Arean , Leopoldo A. Pando Zayas , Ignacio Salazar Landea , Antonello Scardicchio

We present a review of theoretical and experimental works on the problem of mutual interplay of Anderson localization and superconductivity in strongly disordered systems. We start with brief discussion of modern aspects of localization…

Disordered Systems and Neural Networks · Physics 2008-02-03 M. V. Sadovskii

We study the effect of disorder in systems having a non-trivial Euler class. As these recently proposed multi-gap topological phases come about by braiding non-Abelian charged band nodes residing between different bands to induce stable…

Mesoscale and Nanoscale Physics · Physics 2024-08-08 Wojciech J. Jankowski , Mohammadreza Noormandipour , Adrien Bouhon , Robert-Jan Slager

Disorder - impurities and defects violating an ideal order - is always present in solids. It can result in interesting and sometimes unexpected effects in multiband superconductors. Especially if the superconductivity is unconventional thus…

Superconductivity · Physics 2017-04-11 M. M. Korshunov , Yu. N. Togushova , O. V. Dolgov

CeAu2Si2 is a newly discovered pressure-induced heavy fermion superconductor which shows very unusual interplay between superconductivity and magnetism under pressure. Here we compare the results of high-pressure measurements on single…

Superconductivity · Physics 2015-06-23 Z. Ren , G. Giriat , G. W. Scheerer , G. Lapertot , D. Jaccard

The interplay between disorder and superconductivity has intrigued physicists for decades. Of particular interest is the influence of disorder on the superconducting energy gap $\Delta$. In the absence of Coulomb interactions between…

The density of states of the disordered s-wave superconductor is calculated perturbatively. The effect of Coulomb interaction on diffusively moving electrons in the normal state has been known before, but in the superconducting state both…

Superconductivity · Physics 2019-10-03 Takanobu Jujo

Using the generalized DMFT+Sigma approach we have studied disorder influence on single-particle properties of the normal phase and superconducting transition temperature in attractive Hubbard model. The wide range of attractive potentials U…

Superconductivity · Physics 2018-10-12 E. Z. Kuchinskii , N. A. Kuleeva , M. V. Sadovskii

We microscopically derive the Ginzburg-Landau free energy functional for a noncentrosymmetric superconductor with a large spin-orbit splitting of the electron bands, in the presence of nonmagnetic impurities. The critical temperature is…

Superconductivity · Physics 2009-11-11 V. P. Mineev , K. V. Samokhin

In materials with strong local Coulomb interactions, simple defects such as atomic substitutions strongly affect both macroscopic and local properties of the system. A nonmagnetic impurity, for instance, is seen to induce magnetism nearby.…

Strongly Correlated Electrons · Physics 2015-05-13 H. Alloul , J. Bobroff , M. Gabay , P. J. Hirschfeld

We give a theoretical analysis of published experimental studies of the effects of impurities and disorder on the superconducting transition temperature, T_c, of the organic molecular crystals kappa-ET_2X and beta-ET_2X (where ET is…

Superconductivity · Physics 2007-05-23 B. J. Powell , Ross H. McKenzie

The Aharonov-Casher effect is the analogue of the Aharonov-Bohm effect that applies to neutral particles carrying a magnetic moment. This can be manifested by vortices or fluxons flowing in trajectories that encompass an electric charge.…

Superconductivity · Physics 2020-10-07 Arnab Roy , Yuxiao Wu , Richard Berkovits , Aviad Frydman

This article aims to study the linear and nonlinear optical response of inversion symmetric graphene quantum dots (GQDs) in the presence of on-site disorder or vacancies. The presence of disorder or vacancy breaks the special inversion…

Mesoscale and Nanoscale Physics · Physics 2023-10-26 H. K. Avetissian , G. A. Musayelyan , G. F. Mkrtchian

The coexistence state of antiferromagnetism (AF) and superconductivity (SC) has been observed in five-layered cuprates. However, this coexistence state disappears, and the AF phase and SC phase lose contact in the doping phase diagram…

Strongly Correlated Electrons · Physics 2012-12-06 H. Tamaki , K. Miyake

In arXiv:1301.3829 and arXiv:1501.05148 I. M. Suslov proposes a theoretical description for the interplay between disorder and superconductivity that, among other things, claims to predict situations where superconductivity is enhanced by…

Superconductivity · Physics 2015-02-24 James Mayoh , Antonio M. Garcia-Garcia

We study the disorder effects upon superconducting transition temperature T_c and the number of local pairs in attractive Hubbard model within the combined Nozieres - Schmitt-Rink and DMFT+\Sigma approximations. We analyze the wide range of…

Superconductivity · Physics 2018-10-12 E. Z. Kuchinskii , N. A. Kuleeva , M. V. Sadovskii

On the basis of the recently proposed self-consistent theory of metal- insulator transition in strongly disordered systems, taking into account interaction effects, we study transition temperature $T_{c}$ suppression in disordered…

Superconductivity · Physics 2009-10-28 E. Z. Kuchinskii , M. V. Sadovskii , M. A. Erkabaev

We study the sensitivity of Yu-Shiba-Rusinov states, bound states that form around magnetic scatterers in superconductors, to the presence of nonmagnetic disorder in both two and three dimensional systems. We formulate a scattering approach…

Mesoscale and Nanoscale Physics · Physics 2017-12-01 Thomas Kiendl , Felix von Oppen , Piet W. Brouwer

This article reviews the unconventional effects of random disorder on magnetic quantum phase transitions, focusing on a number of new experimental and theoretical developments during the last three years. On the theory side, we address…

Strongly Correlated Electrons · Physics 2014-08-26 Thomas Vojta

We investigate the effect of strong disorder on a system with strong electronic repulsion. In absence of disorder, the system has a d-wave superconducting ground-state with strong non-BCS features due to its proximity to a Mott insulator.…

Superconductivity · Physics 2017-02-01 Debmalya Chakraborty , Rajdeep Sensarma , Amit Ghosal