Intrinsic effects of the boundary condition on switching processes in spin-crossover solids

Autor:	Nishino, Masamichi, Enachescu, Cristian, Miyashita, Seiji, Boukheddaden, Kamel, Varret, Francois
Rok vydání:	2009
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 82, 020409(R) (2010)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.82.020409
Popis:	We investigated domain growth in switching processes between the low-spin and high-spin phases in thermally induced hysteresis loops of spin-crossover (SC) solids. Elastic interactions among the molecules induce effective long-range interactions, and thus the boundary condition plays a significant role in the dynamics. In contrast to SC systems with periodic boundary conditions, where uniform configurations are maintained during the switching process, we found that domain structures appear with open boundary conditions. Unlike Ising-like models with short-range interactions, domains always grow from the corners of the system. The present clustering mechanism provides an insight into the switching dynamics of SC solids, in particular, in nano-scale systems. Comment: 5pages, 5figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0910.4519 Zobrazit plný text záznamu View this record from Arxiv