Pressure Dependence of Superconducting Transition Temperature Tc in a Series of Zn-Substituted YBa2Cu3-xZnxO7-δ Single Crystals: Effects of Pairing-Related Dynamic Processes Versus Static Lattice Modifications

Autor:	Xiaohang Li, L. Lu, Z. Z. Wang, X. N. Jing, S. L. Li, Zhang Dian-lin
Rok vydání:	1998
Předmět:	Materials science Condensed matter physics Impurity Lattice (order) Pairing Superconducting transition temperature Statistical and Nonlinear Physics Crystallite Pressure dependence Condensed Matter Physics
Zdroj:	Modern Physics Letters B. 12:589-596
ISSN:	1793-6640 0217-9849
DOI:	10.1142/s021798499800069x
Popis:	The pressure dependence of superconducting transition temperature Tc was investigated on single-crystal samples of Zn-substituted YBa 2 Cu 3-x Zn x O 7-δ. In contrast to previous measurements on polycrystalline samples where, because of the broad transition, large uncertainty exists in determining the detailed pressure dependence of Tc, our measurements revealed that adding Zn impurities only slightly enhances the dTc=dP (where P denotes the pressure). The absolute value of dT c =dP is small in the whole range of x investigated, despite of the dramatic depression of Tc upon the substitution. The results seem to demonstrate that the depression of T c , and hence the dynamic processes responsible for the pairing mechanism, are quite irrelevant to, or insensitive to the pressure-induced static lattice modifications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2ba9c52495a99a448adaf61ea33f264a https://doi.org/10.1142/s021798499800069x Zobrazit plný text záznamu