Photoinduced changes of reflectivity in single crystals of YBa2Cu3O6.5 (ortho II).

Segre, G P; Gedik, N; Orenstein, J; Bonn, D A; Liang, Ruixing; Hardy, W N

Segre, G P; Gedik, N; Orenstein, J; Bonn, D A; Liang, Ruixing; Hardy, W N.

Affiliation

Segre GP; Materials Sciences Division, Lawrence Berkeley National Laboratory and Physics Department, University of California, Berkeley, California 94720, USA.

Phys Rev Lett ; 88(13): 137001, 2002 Apr 01.

Article in En | MEDLINE | ID: mdl-11955115

ABSTRACT

ABSTRACT

We report measurements of the photoinduced change in reflectivity of an untwinned single crystal of YBa2Cu3O6.5 in the ortho II structure. The decay rate of the transient change in reflectivity is found to decrease rapidly with decreasing temperature and, below T(c), with decreasing laser intensity. We interpret the decay as a process of thermalization of antinodal quasiparticles, with a rate determined by inelastic scattering of quasiparticle pairs.

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Database: MEDLINE Language: En Year: 2002 Type: Article

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Database: MEDLINE Language: En Year: 2002 Type: Article