Threshold phenomena under photoexcitation of spin-crossover materials with cooperativity due to elastic interactions

被引：35

作者：

Miyashita, Seiji ^{[1
,2
]}

Rikvold, Per Arne ^{[3
,4
]}

Mori, Takashi ^{[1
,2
]}

Konishi, Yusuke ^{[2
,5
]}

Nishino, Masamichi ^{[2
,6
]}

Tokoro, Hiroko ^{[1
,7
]}

机构：

[1] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] JST, CREST, Kawaguchi, Saitama 3320012, Japan

[3] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

[4] Florida State Univ, Ctr Mat Res & Technol, Tallahassee, FL 32306 USA

[5] KEK, Inst Mat Struct Sci, Solid State Theory Div, Tsukuba, Ibaraki 3050801, Japan

[6] Natl Inst Mat Sci, Computat Mat Sci Ctr, Tsukuba, Ibaraki 3050047, Japan

[7] JST, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 06期

基金：

美国国家科学基金会;

关键词：

magnetic switching; magnetic transitions; magnetoelastic effects; molecular magnetism; Monte Carlo methods; photoexcitation; photomagnetic effect; METASTABLE STATES; CRITICAL-BEHAVIOR; MONTE-CARLO; ISING-MODEL; TRANSITION; FIELD;

D O I：

10.1103/PhysRevB.80.064414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photo-induced switching from the low-spin state to the high-spin state is studied in a model spin-crossover material with long-range interactions induced by elastic distortions due to different molecular sizes of the two spin states. At a threshold value of the light intensity, nonequilibrium critical behavior is observed in the form of a jump in the high-spin fraction, corresponding to a mean-field spinodal point. Finite-size scaling of the divergence of the transition time is revealed through kinetic Monte Carlo simulations.

引用

页数：6

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