TY - JOUR
T1 - Study of dynamics in inhomogeneous states by temperature-modulated optical reflectivity measurement
T2 - Application to perovskite manganites
AU - Masuzawa, Junichi
AU - Saiki, Yuki
AU - Suzuki, Takehito
AU - Katsufuji, Takuro
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/1
Y1 - 2010/1
N2 - We developed an experimental system for measuring temperature-modulated optical reflectivity with a frequency up to 20 kHz to study the dynamics of inhomogeneity in a crystal. By this system, we studied doped perovskite manganites, in which a ferromagnetic metallic phase and a (short-ranged) chargeordered phase coexist near the Curie temperature (TC). We found an appreciable frequency dependence of the temperature-modulated reflectivity around TC. This result can be explained by the dynamics of the domains in the two coexisting phases, i.e., by the relaxation time to reach a new equilibrium state of the two-phase coexistence when the temperature is modulated.
AB - We developed an experimental system for measuring temperature-modulated optical reflectivity with a frequency up to 20 kHz to study the dynamics of inhomogeneity in a crystal. By this system, we studied doped perovskite manganites, in which a ferromagnetic metallic phase and a (short-ranged) chargeordered phase coexist near the Curie temperature (TC). We found an appreciable frequency dependence of the temperature-modulated reflectivity around TC. This result can be explained by the dynamics of the domains in the two coexisting phases, i.e., by the relaxation time to reach a new equilibrium state of the two-phase coexistence when the temperature is modulated.
KW - Optical spectroscopy
KW - Perovskite manganite
KW - Two-phase coexistence
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U2 - 10.1143/JPSJ.79.014704
DO - 10.1143/JPSJ.79.014704
M3 - Article
AN - SCOPUS:77049119738
SN - 0031-9015
VL - 79
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 1
M1 - 014704
ER -