TY - JOUR
T1 - Ultrasonic propagation of a metallic domain in Pr0.5Ca0.5CoO3 undergoing a photoinduced insulator-metal transition
AU - Okimoto, Y.
AU - Peng, X.
AU - Tamura, M.
AU - Morita, T.
AU - Onda, K.
AU - Ishikawa, T.
AU - Koshihara, S.
AU - Todoroki, N.
AU - Kyomen, T.
AU - Itoh, M.
PY - 2009/8/6
Y1 - 2009/8/6
N2 - Femtosecond optical response was investigated on a perovskite-type cobalt oxide, Pr0.5Ca0.5CoO3 during an insulator-metal (I-M) transition accompanied with the change in spin configuration. After photoirradiation at 30 K, the reflectivity showed a sudden and large increase with subsequent variation depending on the observed photon energy. An exact calculation of Maxwell's equations for the Pr0.5Ca0.5CoO3 after the photoirradiation enabled us to observe the ultrafast dynamics of I-M phase transition and the motion of the photonically created metallic domain at the velocity of ultrasonic wave.
AB - Femtosecond optical response was investigated on a perovskite-type cobalt oxide, Pr0.5Ca0.5CoO3 during an insulator-metal (I-M) transition accompanied with the change in spin configuration. After photoirradiation at 30 K, the reflectivity showed a sudden and large increase with subsequent variation depending on the observed photon energy. An exact calculation of Maxwell's equations for the Pr0.5Ca0.5CoO3 after the photoirradiation enabled us to observe the ultrafast dynamics of I-M phase transition and the motion of the photonically created metallic domain at the velocity of ultrasonic wave.
UR - http://www.scopus.com/inward/record.url?scp=68649114128&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=68649114128&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.103.027402
DO - 10.1103/PhysRevLett.103.027402
M3 - Article
AN - SCOPUS:68649114128
SN - 0031-9007
VL - 103
JO - Physical review letters
JF - Physical review letters
IS - 2
M1 - 027402
ER -