Sub-picosecond photo-induced melting of a charge-ordered state in a perovskite manganite

被引：89

作者：

Fiebig, M ^{[1
]}

Miyano, K ^{[1
]}

Tomioka, Y ^{[1
]}

Tokura, Y ^{[1
]}

机构：

[1] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2000年 / 71卷 / 02期

关键词：

D O I：

10.1007/s003400000338

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Ultrafast melting of a charge-ordered state has been observed in the photo-irradiated colossal magnetoresistive compound Pro(0.7)Ca(0.3)MnO(3). Pump-and-probe spectroscopy experiments reveal the formation of a conducting phase with typical features of an insulator-metal transition (IMT) after less than 1 ps. This phase is metastable and can be maintained for about 1 mu s unless it is stabilized persistently into a pathlike metallic region by an electric field. Although laser-induced lattice heating may play a role in the initial excitation, electronic correlations are the dominant effect which leads to the formation of the metallic state upon the breakdown of the charge-ordered state.

引用

收藏

页码：211 / 215

页数：5

相关论文

共 22 条

[1] Ultrafast spin-dependent electron dynamics in fcc Co [J].

Aeschlimann, M ;

Bauer, M ;

Pawlik, S ;

Weber, W ;

Burgermeister, R ;

Oberli, D ;

Siegmann, HC .

PHYSICAL REVIEW LETTERS, 1997, 79 (25) :5158-5161

[2] Current switching of resistive states in magnetoresistive manganites [J].

Asamitsu, A ;

Tomioka, Y ;

Kuwahara, H ;

Tokura, Y .

NATURE, 1997, 388 (6637) :50-52

[3] PICOSECOND OPTOELECTRONIC SWITCHING AND GATING IN SILICON [J].

AUSTON, DH .

APPLIED PHYSICS LETTERS, 1975, 26 (03) :101-103

[4] Ultrafast spin dynamics in ferromagnetic nickel [J].

Beaurepaire, E ;

Merle, JC ;

Daunois, A ;

Bigot, JY .

PHYSICAL REVIEW LETTERS, 1996, 76 (22) :4250-4253

[5] Structural changes, clustering, and photoinduced phase segregation in Pr0.7Ca0.3MnO3 [J].

Cox, DE ;

Radaelli, PG ;

Marezio, M ;

Cheong, SW .

PHYSICAL REVIEW B, 1998, 57 (06) :3305-3314

[6] Action spectra of the two-stage photoinduced insulator-metal transition in Pr1-xCaxMnO3 [J].

Fiebig, M ;

Miyano, K ;

Satoh, T ;

Tomioka, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 1999, 60 (11) :7944-7949

[7] Reflection spectroscopy on the photoinduced local metallic phase of Pr0.7Ca0.3MnO3 [J].

Fiebig, M ;

Miyano, K ;

Tomioka, Y ;

Tokura, Y .

APPLIED PHYSICS LETTERS, 1999, 74 (16) :2310-2312

[8] Visualization of the local insulator-metal transition in Pr0.7Ca0.3MnO3 [J].

Fiebig, M ;

Miyano, K ;

Tomioka, Y ;

Tokura, Y .

SCIENCE, 1998, 280 (5371) :1925-1928

[9]

Hohlfeld J, 1998, INT SER MONOGR PHYS, V98, P219

[10] Nonequilibrium magnetization dynamics of nickel [J].

Hohlfeld, J ;

Matthias, E ;

Knorren, R ;

Bennemann, KH .

PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4861-4864