de Haas-van Alphen effect in superconductors

Autor:	Vladimir P. Mineev, M. G. Vavilov
Rok vydání:	1997
Předmět:	Superconductivity Physics Magnetization Solid-state physics Condensed matter physics Condensed Matter::Superconductivity Quasiparticle Density of states General Physics and Astronomy Condensed Matter::Strongly Correlated Electrons Electron scattering Critical field Magnetic field
Zdroj:	Journal of Experimental and Theoretical Physics. 85:1024-1034
ISSN:	1090-6509 1063-7761
DOI:	10.1134/1.558415
Popis:	A theory of the de Haas-van Alphen effect in type-II superconductors is proposed. The effect of the electron scattering by nonmagnetic impurities in a magnetic field in the potential produced by a nonuniform distribution of the order parameter in a mixed state is investigated. The magnitude of the order parameter and quasiparticle density of states are determined from the solution of the system of Gor’kov equations. It is shown that in the presence of even a small amount of impurities, the superconducting state near the upper critical field is gapless. In this region, the oscillatory (in the magnetic field) contribution to the density of states and the characteristic damping of the amplitude of the magnetization oscillations in the superconducting state are found.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1c250981e237a281ef3fbcd06c540746 https://doi.org/10.1134/1.558415 Zobrazit plný text záznamu Plný text ve formátu PDF