Dynamical phase transition in a spin-crossover complex

被引：17

作者：

Liu, XJ

Moritomo, Y

Kawamoto, T

Nakamoto, A

Kojima, N

机构：

[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

[2] Natl Inst Adv Ind Sci & Technol, AIST, NRI, Tsukuba, Ibaraki 3058568, Japan

[3] Natl Inst Adv Ind Sci & Technol, AIST, Res Consortium Synthet Nanofunct Mat Project, SYNAF, Tsukuba, Ibaraki 3058568, Japan

[4] Univ Tokyo, Grad Sch Arts & Sci, Tokyo 1538902, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 07期

关键词：

dynamical phase transition; spin crossover complex; MONTE-CARLO SIMULATION; PHOTOINDUCED LOW-SPIN; STATE TRANSITIONS; LIGHT; TEMPERATURE; IRON(II); SOLIDS; MODEL;

D O I：

10.1143/JPSJ.72.1615

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Density n(HS) of photoexcited high-spin (HS) sites in a spin-crossover film (Nafion-[Fe(Htrz)(3)]; Htrz = 1,2,4-4H-triazole) was systematically investigated against temperature T and excitation power density P. At low temperatures (less than or equal to35 K), the n(HS)-P curve shows a nonlinear increase when P reaches a critical value (P-c) We interpreted the increase in terms of the dynamical phase transition into the condensed state of photoexcited HS molecules, and derived the P-T phase diagram. The P-T phase diagram and the n(HS)-P curves were analyzed with an Ising-like model which includes a temperature-dependent field.

引用

页码：1615 / 1618

页数：4

共 22 条

[1]

Avrami M., 1940, J CHEM PHYS, V8, DOI [10.1063/1.1750631, DOI 10.1063/1.1750631]

[2] Dynamical model for spin-crossover solids.: I.: Relaxation effects in the mean-field approach [J].