The Effect of Defects on Magnetic Droplet Nucleation
| العنوان: | The Effect of Defects on Magnetic Droplet Nucleation |
|---|---|
| المؤلفون: | Federico Ettori, Timothy J. Sluckin, Paolo Biscari |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Statistics and Probability, metastable lifetime, dynamic spinodal line, droplets, Statistical Mechanics (cond-mat.stat-mech), Ising model, FOS: Physical sciences, Statistical and Nonlinear Physics, Ising model, defects, metastable lifetime, dynamic spinodal line, droplets, Monte Carlo simulation, defects, Monte Carlo simulation, Condensed Matter - Statistical Mechanics |
| الوصف: | Defects and impurities strongly affect the timing and the character of the (re)ordering or disordering transitions of thermodynamic systems captured in metastable states. In this paper we analyze the case of two-dimensional magnetic systems. We adapt the classical JMAK theory to account for the effects of defects on the free energy barriers, the critical droplet area and the associated metastable time. The resulting predictions are successfully tested against the Monte-Carlo simulations performed by adopting Glauber dynamics, to obtain reliable time-dependent results during the out-of-equilibrium transformations. We also focus on finite-size effects, and study how the spinodal line (separating the singledroplet from the multi-droplet regime) depends on the system size, the defect fraction, and the external field. 29 pages, 10 figures |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d68ed37805666028575ddf2db6a0b348Test http://arxiv.org/abs/2210.02138Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d68ed37805666028575ddf2db6a0b348 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |