Zobrazeno 1 - 10
of 672
pro vyhledávání: '"Croitoru, M."'
Publikováno v:
Phys. Rev. B 107, 024510 (2023)
In the usual perception, surface superconductivity is associated with the surface nucleation of a superconducting condensate above the upper critical field in type-II superconductors or with a rearrangement of phonon properties and the electron-phono
Externí odkaz:
http://arxiv.org/abs/2301.12979
Autor:
Cavalcanti, Paulo J. F., Saraiva, Tiago T., Aguiar, J. Albino, Vagov, A., Croitoru, M. D., Shanenko, A. A.
There is a tacit assumption that multiband superconductors are essentially the same as multigap superconductors. More precisely, it is usually assumed that the number of excitation gaps in the single-particle energy spectrum of a uniform superconduct
Externí odkaz:
http://arxiv.org/abs/2001.07531
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Phys. Rev. A 98, 053605 (2018)
We present a numerical study of the interaction quench dynamics in a superfluid ultracold Fermi gas confined in a three-dimensional cigar-shaped harmonic trap. In the present paper we investigate the amplitude mode of the superfluid order parameter a
Externí odkaz:
http://arxiv.org/abs/1805.11378
Publikováno v:
Phys. Rev. A 97, 013619 (2018)
We present a numerical study of the Higgs mode in an ultracold confined Fermi gas after an interaction quench and find a dynamical vanishing of the superfluid order parameter. Our calculations are done within a microscopic density-matrix approach in
Externí odkaz:
http://arxiv.org/abs/1805.07160
We present a numerical study of the dynamic response of a confined superfluid Fermi gas to a rapid change of the scattering length (i.e., an interaction quench). Based on a fully microscopic time-dependent density-matrix approach within the full Bogo
Externí odkaz:
http://arxiv.org/abs/1708.07709
Publikováno v:
Phys. Rev. A 96, 033618 (2017)
We present a numerical study of a confined ultracold Fermi gas showing that the Goldstone mode of the BCS gap is directly visible in the dynamics of the single-particle excitations. To this end, we investigate the low-energy dynamic response of a con
Externí odkaz:
http://arxiv.org/abs/1511.04239
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
The Higgs amplitude mode of the order parameter of an ultracold confined Fermi gas in the BCS regime after a quench of the coupling constant is analyzed theoretically. Characteristic features are a damped oscillation which at a certain transition tim
Externí odkaz:
http://arxiv.org/abs/1412.2591
Publikováno v:
Phys. Rev. B 90, 075309 (2014)
We demonstrate that in quantum-dot cavity systems, the interplay between acoustic phonons and photon losses introduces novel features and characteristic dependencies in the system dynamics. In particular, the combined action of both loss mechanisms s
Externí odkaz:
http://arxiv.org/abs/1310.2115