Relaxation Times Obtained From Dynamical Decay Function of 1D and 3D Ising Model

Autor:	J. Banys, Robertas Grigalaitis, E. E. Tornau, Saulius Lapinskas
Rok vydání:	2009
Předmět:	Dipole Materials science Condensed matter physics Magnetic domain Autocorrelation Monte Carlo method Relaxation (NMR) Ising model Boundary value problem Spin-flip Statistical physics Condensed Matter Physics Electronic Optical and Magnetic Materials
Zdroj:	Ferroelectrics. 378:63-69
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150190902845103
Popis:	We calculated the dynamical decay of the autocorrelation function of 1D and 3D systems of Ising spins. The calculations were performed by Monte Carlo method for different size domains and at different temperature. Analyzing autocorrelation functions for a transition mechanism, when spin flip dynamics depends on initial energy before the flip only, two main relaxation times were distinguished for each size. When dynamics depends on energy difference before and after the flip, only one relaxation time, (corresponding to the main mode) which depends on domain size, is obtained. These results strongly suggest that non-Debye relaxation in dipolar glasses and relaxors might be caused by domain size distribution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ed42a5732faa8d7efe354048d4dfeabb https://doi.org/10.1080/00150190902845103 Zobrazit plný text záznamu