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- Title
Diffusion of nonequilibrium quasi-particles in a cuprate superconductor.
- Authors
Gedik, N; Orenstein, J; Liang, Ruixing; Bonn, D A; Hardy, W N
- Abstract
We report a transport study of nonequilibrium quasi-particles in a high-transition-temperature cuprate superconductor using the transient grating technique. Low-intensity laser excitation (at a photon energy of 1.5 electron volts) was used to introduce a spatially periodic density of quasi-particles into a high-quality untwinned single crystal of YBa2Cu3O6.5. Probing the evolution of the initial density through space and time yielded the quasi-particle diffusion coefficient and the inelastic and elastic scattering rates. The technique reported here is potentially applicable to precision measurements of quasi-particle dynamics not only in cuprate superconductors but in other electronic systems as well.
- Publication
Science (New York, N.Y.), 2003, Vol 300, Issue 5624, p1410
- ISSN
1095-9203
- Publication type
Journal Article
- DOI
10.1126/science.1083038