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This article is cited in 1 scientific paper (total in 1 paper)
CONDENSED MATTER
Ultrafast optical probes of dynamic behavior in
La$_{0.7}$Sr$_{0.3}$MnO$_3$/YBa$_2$Cu$_3$O$_{7-\delta}$/La$_{0.7}$Sr$_{0.3}$MnO$_3$ heterostructure
L. Penga, Ch. Caib, D. H. Xua, Y. Liua a Department of Physics, Shanghai University of Electric Power
b Shanghai University
Abstract:
Ultrafast pump-optical probe spectroscopy was used to analyze
carriers dynamics behavior in
La$_{0.7}$Sr$_{0.3}$MnO$_3$/YBa$_2$Cu$_3$O$_{7-\delta}$/La$_{0.7}$Sr$_{0.3}$MnO$_3$ heterostructure.
Our results
show the pump signal $\Delta R/R$ for higher laser power
(such as $21$ and $41$ mW),
below $T_c$, first goes positive, then crosses zero and goes negative, before relaxing back
to equilibrium over a time scale of a few ten picoseconds. We extract the characteristic
relaxation time of the different process by fitting the data at these powers with a
three-exponential decay. For higher laser power, the long characteristic relaxation time
are obtained, which implies the competition between FM order and SC order in the
La$_{0.7}$Sr$_{0.3}$MnO$_3$/YBa$_2$Cu$_3$O$_{7-\delta}$/La$_{0.7}$Sr$_{0.3}$MnO$_3$ heterostructure.
Received: 28.10.2013 Revised: 09.12.2013
Citation:
L. Peng, Ch. Cai, D. H. Xu, Y. Liu, “Ultrafast optical probes of dynamic behavior in
La$_{0.7}$Sr$_{0.3}$MnO$_3$/YBa$_2$Cu$_3$O$_{7-\delta}$/La$_{0.7}$Sr$_{0.3}$MnO$_3$ heterostructure”, Pis'ma v Zh. Èksper. Teoret. Fiz., 99:1 (2014), 30–34; JETP Letters, 99:1 (2014), 27–31
Linking options:
https://www.mathnet.ru/eng/jetpl3630 https://www.mathnet.ru/eng/jetpl/v99/i1/p30
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Abstract page: | 155 | Full-text PDF : | 49 | References: | 34 | First page: | 8 |
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