Bibliographic Details
| Title: |
Stability and phase transition of skyrmion crystals generated by Dzyaloshinskii-Moriya interaction. |
| Authors: |
El Hog, Sahbi1 sahbi.el-hog@u-cergy.fr, Bailly-Reyre, Aurélien1 aurelien.bailly-reyre@u-cergy.fr, Diep, H.T.1 diep@u-cergy.fr |
| Source: |
Journal of Magnetism & Magnetic Materials. Jun2018, Vol. 455, p32-38. 7p. |
| Subjects: |
Skyrmions, Phase transitions, Magnetic fields, Crystals, Monte Carlo method |
| Abstract: |
We generate a crystal of skyrmions in two dimensions using a Heisenberg Hamiltonian including the ferromagnetic interaction J , the Dzyaloshinskii-Moriya interaction D , and an applied magnetic field H . The ground state (GS) is determined by minimizing the interaction energy. We show that the GS is a skyrmion crystal in a region of ( D , H ) . The stability of this skyrmion crystalline phase at finite temperatures is shown by a study of the time-dependence of the order parameter using Monte Carlo simulations. We observe that the relaxation is very slow and follows a stretched exponential law. The skyrmion crystal phase is shown to undergo a transition to the paramagnetic state at a finite temperature. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Magnetism & Magnetic Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Engineering Source |
