Optical cooper pair breaking spectroscopy of cuprate superconductors

Zhao, Y. G. ; Li, Eric ; Wu, Tom ; Ogale, S. B. ; Sharma, R. P. ; Venkatesan, T. ; Li, J. J. ; Cao, W. L. ; Lee, C. H. ; Sato, H. ; Naito, M. (2001) Optical cooper pair breaking spectroscopy of cuprate superconductors Physical Review B, 63 (13). 132507_1-132507_4. ISSN 0163-1829

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Official URL: http://prb.aps.org/abstract/PRB/v63/i13/e132507

Related URL: http://dx.doi.org/10.1103/PhysRevB.63.132507

Abstract

The photon energy dependence of the optical Cooper pair breaking rate (CPBR) is studied for compressibly strained La_1.85Sr_0.15CuO₄ (LSCO) films and YBa₂Cu_2.92Zn_0.08O_7-δ (YBCZO) thin films, and compared to that in YBa₂Cu₃O_7-δ (YBCO). Unlike YBCO, the CPBR for LSCO does not show an obvious photon energy dependence. In YBCZO, the CPBR shows a strong energy dependence similar to YBCO, but with a redshift in the peak position. Analysis of these results strongly favors a physical picture based on electronic phase separation in high-T_c superconductivity.

Item Type:	Article
Source:	Copyright of this article belongs to American Physical Society.
ID Code:	26867
Deposited On:	08 Dec 2010 13:04
Last Modified:	17 May 2016 10:09

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