Phase transition in three-dimensional Heisenberg spin glasses with strong random anisotropies through a multi-GPU parallelization
We characterize the phase diagram of anisotropic Heisenberg spin glasses, finding both the spin and the chiral glass transition. We remark on the presence of strong finite-size effects in the chiral sector. On the spin glass sector, we find that the universality class is that of Ising spin glasses....
| Authors: | , , , |
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| Format: | article |
| Publication Date: | 2014 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/35158 |
| Online Access: | https://hdl.handle.net/20.500.14352/35158 |
| Access Level: | Open access |
| Keyword: | 53 Neutron-polarization-analysis Cu-Mn Alloys Monte-Carlo Ising-model Critical-behavior 3 dimensions Critical exponents Simulations Ferromagnetism Generators. Física (Física) Física-Modelos matemáticos 22 Física |
| Summary: | We characterize the phase diagram of anisotropic Heisenberg spin glasses, finding both the spin and the chiral glass transition. We remark on the presence of strong finite-size effects in the chiral sector. On the spin glass sector, we find that the universality class is that of Ising spin glasses. Our data are compatible with a unique phase transition for the chiral and spin glass sector. We focus on keeping finite-size effects under control, and we stress that they are important to understand experiments. Thanks to large GPU clusters we have been able to thermalize cubic lattices with up to 643 spins, over a vast range of temperatures (hence, of relaxation times). |
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