Anisotropy in theab-plane optical properties ofBi2Sr2CaCu2O8single-domain crystals

Autor:	Helmuth Berger, R. J. Kelley, Giorgio Margaritondo, M. A. Quijada, D. B. Tanner, Marshall Onellion
Rok vydání:	1999
Předmět:	Physics Superconductivity Condensed matter physics Oscillator strength Condensed Matter::Superconductivity Orthorhombic crystal system Lambda Anisotropy Penetration depth Optical conductivity Principal axis theorem
Zdroj:	Physical Review B. 60:14917-14934
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.60.14917
Popis:	The ab-plane optical properties of the high-temperature superconductor Bi2Sr2CaCu2O8 are anisotropic in both the normal and the superconducting state. Consistent with the orthorhombic structure, the principal axes lie along the a and b crystallographic axes, nearly 45 degrees from the Cu-O bond direction. In the normal state, analysis of the temperature-dependent optical conductivity suggests a:scattering rate for the free carriers that shows ab anisotropy in both magnitude and temperature dependence. In;the superconducting state, the anisotropy in the oscillator strength of the superfluid response determined from the far-infrared frequency dependence of sigma(2)(omega) and from a sum-rule analysis leads to a penetration depth lambda(D) that is larger along the b axis than the a axis: (lambda(L)(b)>lambda(L)(a)). [S0163-1829(99)01845-7].
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d1e8ffcab4d88a581742ff4bab5a3a22 https://doi.org/10.1103/physrevb.60.14917 Zobrazit plný text záznamu