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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2002, Volume 75, Issue 12, Pages 768–771
(Mi jetpl3142)
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This article is cited in 2 scientific papers (total in 2 papers)
CONDENSED MATTER
Characteristic features of the pseudogap and superconducting states of YBa$_2$Cu$_3$O$_{7-x}$
O. V. Misochkoa, N. Georgievb, T. Dekorsyb, M. Helmb a Institute of Solid State Physics, Russian Academy of Sciences
b Institute for Ion Beam Physics and Materials Research
Abstract:
The relaxation dynamics of the lattice and low-energy quasiparticles in a YBa$_2$Cu$_3$O$_{7-x}$ superconductor are studied by the light reflection technique with femtosecond temporal resolution in a wide temperature range. It is shown that, for $T>T_c$, there exist two temperature regions with qualitatively and quantitatively different excitation dynamics, and the transition between these regions is of a hysteretic nature. It is also found that the character of changes observed in the charge carrier relaxation dynamics in the superconducting state testifies to the presence of an anisotropic gap with nodes at the Fermi surface.
Received: 13.05.2002
Citation:
O. V. Misochko, N. Georgiev, T. Dekorsy, M. Helm, “Characteristic features of the pseudogap and superconducting states of YBa$_2$Cu$_3$O$_{7-x}$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 75:12 (2002), 768–771; JETP Letters, 75:12 (2002), 642–645
Linking options:
https://www.mathnet.ru/eng/jetpl3142 https://www.mathnet.ru/eng/jetpl/v75/i12/p768
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Abstract page: | 172 | Full-text PDF : | 59 | References: | 35 |
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