On the mechanism of high-temperature superconductivity in hydrogen sulfide at 200 GPa: Transition into superconducting anti-adiabatic state in coupling to H-vibrations

Autor: Pavol Baňacký

Publikováno v: Results in Physics, Vol 6, Iss , Pp 1-2 (2016)

It has been shown that the adiabatic electronic structure of the superconducting phase of sulfur hydride at 200 GPa is unstable toward the vibration motion of H-atoms. A theoretical study indicates that in coupling to H-vibrations, the system undergo

Externí odkaz: https://doaj.org/article/381ed6d85b6d4719a20e925bc0a2bcd1

Antiadiabatic Theory of Superconducting State Transition: Phonons and Strong Electron Correlations—The Old Physics and New Aspects

Autor: Pavol Baňacký

Publikováno v: Advances in Condensed Matter Physics, Vol 2010 (2010)

Complex electronic ground state of molecular and solid state system is analyzed on the ab initio level beyond the adiabatic Born-Oppenheimer approximation (BOA). The attention is focused on the band structure fluctuation (BSF) at Fermi level, which i

Externí odkaz: https://doaj.org/article/c054e6e15df04c83beec528ac724e8dd

Microscopic insight into the pump-probe relaxation dynamics of superconductors: Model study of MgB2 relaxation within nonlinear response theory

Autor: Pavol Baňacký, Vojtech Szöcs

Publikováno v: physica status solidi (b). 253:942-964

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e6cce858b6102fc70fb67aeb646ada91
https://doi.org/10.1002/pssb.201552571

Ab initio theory of complex electronic ground state of superconductors: I. Nonadiabatic modification of the Born–Oppenheimer approximation

Autor: Pavol Baňacký

Publikováno v: Journal of Physics and Chemistry of Solids
Journal of Physics and Chemistry of Solids, Elsevier, 2010, 69 (11), pp.2728. ⟨10.1016/j.jpcs.2008.07.002⟩

The ARPES of high- T c cuprates and theoretical results of low-Fermi energy band structure fluctuation for different groups of superconductors indicate that electron coupling to pertinent phonon modes drive system from adiabatic into anti-adiabatic s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bffab6e4254754b743d453823704f5f4
https://doi.org/10.1016/j.jpcs.2008.07.002

Nonadiabatic sudden increase of the cooperative kinetic effect at lattice energy stabilization?Microscopic mechanism of superconducting state transition: Model study of MgB2

Autor: Pavol Baňacký

Publikováno v: International Journal of Quantum Chemistry. 101:131-152

The theory of the nonadiabatic electron–vibration interactions has been applied to the study of MgB2 superconducting state transition. It has been shown that at nonadiabatic conditions in which the Born–Oppenheimer approximation is not valid and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d54196e7099a2c6611b42321b3bef469
https://doi.org/10.1002/qua.20219