Optical Cooper pair breaking spectroscopy of YBa2Cu2.8Zn0.2O7- thin films
Abstract:In this paper, the photon-energy dependence of the optical Cooper pair breaking rate (CPBR) was studied for YBa2Cu2.8Zn0.2O7- (YBCZO) thin films, and was compared to that in YBCO. In YBCZO the CPBR also shows strong photon-energy dependence, similar to that in YBCO, but with a change in the position and shape of the absorption feature. The results were discussed in terms of the resonance of Cooper pair breaking and the involvement of the insulating stripes. This study favours a physical scenario based on electronic phase separation in high-Tc superconductivity.
Document Type: Miscellaneous
Affiliations: 1: Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China 2: Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD 20742, USA 3: Department of Electrical Engineering, University of Maryland, College Park, MD 20742, USA
Publication date: January 1, 2002