Ultrasonic Propagation of a Metallic Domain in Pr0.5Ca0.5CoO3 Undergoing a Photoinduced Insulator-Metal Transition

被引：60

作者：

Okimoto, Y. ^{[1
]}

Peng, X. ^{[1
]}

Tamura, M. ^{[1
]}

Morita, T. ^{[1
]}

Onda, K. ^{[1
,2
]}

Ishikawa, T. ^{[1
]}

Koshihara, S. ^{[1
,2
]}

Todoroki, N. ^{[3
]}

Kyomen, T. ^{[3
]}

Itoh, M. ^{[3
]}

机构：

[1] Tokyo Inst Technol, Dept Mat Sci, Meguro Ku, Tokyo 1528551, Japan

[2] ERATO JST, Nonequilibrium Dynam Project, Tsukuba, Ibaraki 3050801, Japan

[3] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 02期

关键词：

SPIN-STATE; DYNAMICS; PHASE;

D O I：

10.1103/PhysRevLett.103.027402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

收藏

页数：4

相关论文

共 26 条

[1] VARIATION OF OPTICAL GAPS IN PEROVSKITE-TYPE 3D TRANSITION-METAL OXIDES [J].

ARIMA, T ;

TOKURA, Y ;

TORRANCE, JB .

PHYSICAL REVIEW B, 1993, 48 (23) :17006-17009

[2] 4D visualization of transitional structures in phase transformations by electron diffraction [J].

Baum, Peter ;

Yang, Ding-Shyue ;

Zewail, Ahmed H. .

SCIENCE, 2007, 318 (5851) :788-792

[3] Spin crossover and photomagnetism in dinuclear iron(II) compounds [J].

Bousseksou, Azzedine ;

Molnar, Gabor ;

Real, Jose Antonio ;

Tanaka, Koichiro .

COORDINATION CHEMISTRY REVIEWS, 2007, 251 (13-14) :1822-1833

[4] Femtosecond structural dynamics in VO2 during an ultrafast solid-solid phase transition -: art. no. 237401 [J].

Cavalleri, A ;

Tóth, C ;

Siders, CW ;

Squier, JA ;

Ráksi, F ;

Forget, P ;

Kieffer, JC .

PHYSICAL REVIEW LETTERS, 2001, 87 (23) :237401-1

[5] Gigantic photoresponse in 1/4-filled-band organic salt (EDO-TTF)2PF6 [J].

Chollet, M ;

Guerin, L ;

Uchida, N ;

Fukaya, S ;

Shimoda, H ;

Ishikawa, T ;

Matsuda, K ;

Hasegawa, T ;

Ota, A ;

Yamochi, H ;

Saito, G ;

Tazaki, R ;

Adachi, S ;

Koshihara, S .

SCIENCE, 2005, 307 (5706) :86-89

[6] Transport and magnetic studies on the spin state transition of Pr1-xCaxCoO3 up to high pressure [J].

Fujita, T ;

Miyashita, T ;

Yasui, Y ;

Kobayashi, Y ;

Sato, M ;

Nishibori, E ;

Sakata, M ;

Shimojo, Y ;

Igawa, N ;

Ishii, Y ;

Kakurai, K ;

Adachi, T ;

Ohishi, Y ;

Takata, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2004, 73 (07) :1987-1997

[7] Enhanced photosusceptibility near Tc for the light-induced insulator-to-metal phase transition in vanadium dioxide [J].

Hilton, D. J. ;

Prasankumar, R. P. ;

Fourmaux, S. ;

Cavalleri, A. ;

Brassard, D. ;

El Khakani, M. A. ;

Kieffer, J. C. ;

Taylor, A. J. ;

Averitt, R. D. .

PHYSICAL REVIEW LETTERS, 2007, 99 (22)

[8] Metal-insulator transitions [J].

Imada, M ;

Fujimori, A ;

Tokura, Y .

REVIEWS OF MODERN PHYSICS, 1998, 70 (04) :1039-1263

[9] Intermediate-spin state and properties of LaCoO3 [J].

Korotin, MA ;

Ezhov, SY ;

Solovyev, IV ;

Anisimov, VI ;

Khomskii, DI ;

Sawatzky, GA .

PHYSICAL REVIEW B, 1996, 54 (08) :5309-5316

[10] Ultrafast photoinduced insulator-ferromagnet transition in the perovskite manganite Gd0.55Sr0.45MnO3 [J].

Matsubara, M. ;

Okimoto, Y. ;

Ogasawara, T. ;

Tomioka, Y. ;

Okamoto, H. ;

Tokura, Y. .

PHYSICAL REVIEW LETTERS, 2007, 99 (20)