Model for Elastic Relaxation Phenomena in Finite 2D Hexagonal Molecular Lattices

被引：128

作者：

Enachescu, Cristian ^{[1
]}

Stoleriu, Laurentiu ^{[1
]}

Stancu, Alexandru ^{[1
]}

Hauser, Andreas ^{[2
]}

机构：

[1] Alexandru Ioan Cuza Univ, Dept Phys, Iasi, Romania

[2] Univ Geneva, Dept Chim Phys, CH-1211 Geneva 4, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 25期

基金：

瑞士国家科学基金会;

关键词：

SPIN-TRANSITION; HYSTERESIS; DYNAMICS;

D O I：

10.1103/PhysRevLett.102.257204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The relaxation in a spin transition compound is modeled on the basis of molecules interacting by the way of connecting springs and situated in a bidimensional open boundary hexagonal lattice. The switch of individual molecules is randomly checked using a standard Monte Carlo procedure. The switching probability depends on the energy gap between the two states in the absence of interactions and on the elongations of the nearest springs. The main characteristics of the experimental relaxation curves are reproduced and clustering and nucleation phenomena are detected.

引用

页数：4

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