Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Šopík, Břetislav"'
Autor:
Šopík, Břetislav, Strenáčik, Tomáš
We define edit distance for hierarchically structured data compatible with the hierarchical multi-instance learning paradigm. Example of such data is dataset represented in JSON format where inner Array objects are interpreted as unordered bags of el
Externí odkaz:
http://arxiv.org/abs/2208.00782
Autor:
Šopík, Břetislav
Author: Mgr. Břetislav Šopík Thesis advisor: doc. Pavel Lipavský, CSc. Ph.D. thesis Superconductivity in disordered systems Abstract We study some aspects of the superconductivity in disordered systems - namely the superconductivity in a boron-do
Externí odkaz:
http://www.nusl.cz/ntk/nusl-297729
Autor:
Šopík, Břetislav
Mean-field theory for disordered systems of correlated electrons is constructed, where correlations caused by Hubbard's interaction are included in the Hartree aproximation. This theory is then used to describe influence of electron correlations on d
Externí odkaz:
http://www.nusl.cz/ntk/nusl-270141
Publikováno v:
Phys. Rev. B 89, 165308 (2014)
We investigate the conductivity of charge carriers confined to a two-dimensional system with the non-parabolic dispersion $k^N$ with $N$ being an arbitrary natural number. A delta-shaped scattering potential is assumed as the major source of disorder
Externí odkaz:
http://arxiv.org/abs/1401.6178
We report on results of our analysis of published experimental data of the in-plane infrared response of two representative underdoped high-$T_{\mathrm{c}}$ cuprate superconductors, focusing on a characteristic gap feature in the spectra of the real
Externí odkaz:
http://arxiv.org/abs/1401.3776
Publikováno v:
J. Stat. Mech. (2013) P12006
In this methodology focused paper we scrutinize the application of the band-coherent Boltzmann equation approach to calculating the conductivity of chiral particles. As the ideal testing ground we use the two-band kinetic Hamiltonian with an N-fold c
Externí odkaz:
http://arxiv.org/abs/1304.3929
Publikováno v:
Physical Review B 87, 024516 (2013)
We extend Gor'kov theory to address superconducting pairing at high magnetic fields and general temperatures with arbitrary attractive interaction strength. This analysis begins with a new interpretation of the high-field Gor'kov gap equation which w
Externí odkaz:
http://arxiv.org/abs/1112.1112
Autor:
Šopík, Břetislav, Lipavský, Pavel
We study how attractive boron correlations in boron-doped diamond affect the superconducting critical temperature. The critical temperature is obtained from the McMillan formula for strong coupling superconductors with the density of states evaluated
Externí odkaz:
http://arxiv.org/abs/1011.5824
According to the BCS theory the superconducting condensate develops in a single quantum mode and no Cooper pairs out of the condensate are assumed. Here we discuss a mechanism by which the successful mode inhibits condensation in neighboring modes an
Externí odkaz:
http://arxiv.org/abs/1008.5293
Autor:
Šopík, Břetislav
We study the concentration dependence of the superconducting critical temperature Tc in a boron-doped diamond. We evaluate the density of states at Fermi level within the dynamical cluster approximation obtaining higher values than from the coherent
Externí odkaz:
http://arxiv.org/abs/0906.3948