Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Khaymovich, I. M."'
Autor:
Samokhvalov, A. V., Shereshevskii, I. A., Vdovicheva, N. K., Taupin, M., Khaymovich, I. M., Mel'nikov, A. S.
Publikováno v:
Phys. Rev. B 105, 024522 (2022)
We examine energy relaxation of non-equilibrium quasiparticles in different vortex configurations in ``dirty'' $s$-wave superconductors. The heat flow from the electronic subsystem to phonons in a mesoscopic superconducting disk with a radius of the
Externí odkaz:
http://arxiv.org/abs/2112.00034
Publikováno v:
SciPost Phys. 12, 048 (2022)
The accuracy of the forward scattering approximation for two-point Green's functions of the Anderson localization model on the Cayley tree is studied. A relationship between the moments of the Green's function and the largest eigenvalue of the linear
Externí odkaz:
http://arxiv.org/abs/2108.10326
Autor:
Kutlin, A. G., Khaymovich, I. M.
Publikováno v:
SciPost Phys. 11, 101 (2021)
We study the effects of partial correlations in kinetic hopping terms of long-range disordered random matrix models on their localization properties. We consider a set of models interpolating between fully-localized Richardson's model and the celebra
Externí odkaz:
http://arxiv.org/abs/2106.03864
Autor:
Khaymovich, I. M., Kravtsov, V. E.
Publikováno v:
SciPost Phys. 11 (2), 045 (2021)
We consider the static and dynamic phases in a Rosenzweig-Porter (RP) random matrix ensemble with the tailed distribution of off-diagonal matrix elements of the form of the large-deviation ansatz. We present a general theory of survival probability i
Externí odkaz:
http://arxiv.org/abs/2106.01965
Publikováno v:
Phys. Rev. Research 2, 043346 (2020)
In this paper we suggest an extension of the Rosenzweig-Porter (RP) model, the LN-RP model, in which the off-diagonal matrix elements have a wide, log-normal distribution. We argue that this model is more suitable to describe a generic many body loca
Externí odkaz:
http://arxiv.org/abs/2006.04827
Gaussian Rosenzweig-Porter (GRP) random matrix ensemble is the only one in which the robust multifractal phase and ergodic transition have a status of a mathematical theorem. Yet, this phase in GRP model is oversimplified: the spectrum of fractal dim
Externí odkaz:
http://arxiv.org/abs/2002.02979
Autor:
Kutlin, A. G., Khaymovich, I. M.
Publikováno v:
SciPost Phys. 8, 049 (2020)
We study the wave function localization properties in a d-dimensional model of randomly spaced particles with isotropic hopping potential depending solely on Euclidean interparticle distances. Due to the generality of this model usually called the Eu
Externí odkaz:
http://arxiv.org/abs/2001.06493
Publikováno v:
Phys. Rev. B 100, 104515 (2019)
The proximity effect in hybrid superconducting - normal metal structures is shown to affect strongly the coherent oscillations of the superconducting order parameter $\Delta$ known as the Higgs modes. The standard Higgs mode at the frequency $2\Delta
Externí odkaz:
http://arxiv.org/abs/1906.02751
Autor:
Nosov, P. A., Khaymovich, I. M.
Publikováno v:
Phys. Rev. B 99, 224208 (2019)
Motivated by the constrained many-body dynamics, the stability of the localization-delocalization properties to the inclusion of the soft constraints is addressed in random matrix models. These constraints are modeled by correlations in long-ranged h
Externí odkaz:
http://arxiv.org/abs/1904.11509
Autor:
Samokhvalov, A. V., Shereshevskii, I. A., Vdovicheva, N. K., Taupin, M., Khaymovich, I. M., Pekola, J. P., Mel'nikov, A. S.
Publikováno v:
Phys. Rev. B 99, 134512 (2019)
The electronic structure of the giant vortex states in a mesoscopic superconducting disk is studied in a dirty limit using the Usadel approach. The local density of states profiles are shown to be strongly affected by the effect of quasiparticle (QP)
Externí odkaz:
http://arxiv.org/abs/1901.01263