Disorder-Induced Change of Gap Anisotropy in Bi2+xSr2-xCaCu2O8+δStudied by Raman Spectroscopy
- 1 January 2012
- journal article
- Published by Physical Society of Japan in Journal of the Physical Society of Japan
- Vol. 81 (Suppl.B) , SB033
Abstract
We report electronic Raman scattering measurements on out-of-plane disordered Bi 2+ x Sr 2- x CaCu 2 O 8+δ . With increasing out-of-plane disorder, the critical temperature T c is significantly suppressed, but suppression of the superconducting gap energy is observed only in the nodal region. Our experimental finding advocate the two-gap scenario that the origins of the nodal and the antinodal gap are different.Keywords
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