Theory of Kondo Effect in Superconductors. I : Transition Temperature and Upper Critical Field

Autor:	MATSUURA, Tamifusa, ICHINOSE, Shin'ichi, NAGAOKA, Yosuke
Jazyk:	angličtina
Rok vydání:	1977
Předmět:	Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Zdroj:	Progress of theoretical physics. 57(3):713-733
ISSN:	0033-068X
Popis:	An approximation is proposed for the magnetic-impurity effect on superconductivity, where the many-body effect of impurities, i.e., the Kondo effect, is fully taken into account. It is an interpolation between the behavior in two limiting cases; i.e., the pair-breaking effect due to magnetic scattering of electrons in the high-temperature and energy region, and the effective repulsive interaction between the Cooper-pair electrons mediated by virtual polarization of impurities in the low-temperature and energy region. Using this approximation, the superconducting transition temperature and the upper critical field are calculated in the presence of impurities. Contrary to the Muller-Hartmann-Zittartz theory, a finite critical concentration is obtained for any value of the Kondo temperature, though it increases rapidly when the Kondo temperature increases. 市ノ瀬愼一氏の博士論文の中の副論文部分 http://hdl.handle.net/2237/14934
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=jairo_______::e46458f0f5190714d30138ef81c83bc7 https://nagoya.repo.nii.ac.jp/records/13040 Zobrazit plný text záznamu