
Proceedings Paper
Localized states within 2 eV of Ef in YBa2Cu3O7-d and deduced from the carrier relaxation dynamicsFormat | Member Price | Non-Member Price |
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Paper Abstract
Temperature dependence of the relaxation of photoexcited (PE) carriers is used as a probe of the electronic structure of the high-temperature superconductor YBa2Cu3O7- (delta ) ((delta) approximately equals 0.1). The relaxation process is studied by 'counting' -- through measurement of the Raman scattering Stokes/anti-Stokes intensity ratio -- the phonons emitted in the process of carrier energy relaxation. The phonon 'shake-off' is found to be strongly temperature dependent, implying that the PE carrier relaxation proceeds via a temperature activated process, which can be understood in terms of hopping between localized states. The long PE carrier lifetime and temperature dependence of the relaxation process implies the existence of localized states within 2 eV of the Fermi energy in optimally doped high-Tc superconductor.
Paper Details
Date Published: 10 June 1996
PDF: 6 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241774
Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)
PDF: 6 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241774
Show Author Affiliations
Bostjan Podobnik, Jozef Stefan Institute (Slovenia)
Dragan Mihailovic, Jozef Stefan Institute (Slovenia)
Dragan Mihailovic, Jozef Stefan Institute (Slovenia)
Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)
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