Analysis of Ionicity-Magnetism Competition in 2D-MX3 Halides towards a Low-Dimensional Materials Study Based on GPU-Enabled Computational Systems
| Autor: | Sergey I. Malkovsky, A. N. Chibisov, Alexey Kartsev |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
ESSL
Computer science General Chemical Engineering ferromagentism Graphics processing unit GPU Context (language use) CUDA Material Design biquadratic exchange Article Computational science CrI3 Chemistry Quantum ESPRESSO Scalability 2D magnets Periodic boundary conditions General Materials Science RuCl3 Central processing unit CPU QD1-999 density functional theory |
| Zdroj: | Nanomaterials Volume 11 Issue 11 Nanomaterials, Vol 11, Iss 2967, p 2967 (2021) |
| ISSN: | 2079-4991 |
| Popis: | The acceleration of parallel high-throughput first-principle calculations in the context of 3D (three dimensional) periodic boundary conditions for low-dimensional systems, and particularly 2D materials, is an important issue for new material design. Where the scalability rapidly deflated due to the use of large void unit cells along with a significant number of atoms, which should mimic layered structures in the vacuum space. In this report, we explored the scalability and performance of the Quantum ESPRESSO package in the hybrid central processing unit - graphics processing unit (CPU-GPU) environment. The study carried out in the comparison to CPU-based systems for simulations of 2D magnets where significant improvement of computational speed was achieved based on the IBM ESSL SMP CUDA library. As an example of physics-related results, we have computed and discussed the ionicity-covalency and related ferro- (FM) and antiferro-magnetic (AFM) exchange competitions computed for some CrX3 compounds. Further, it has been demonstrated how this exchange interplay leads to high-order effects for the magnetism of the 1L-RuCl3 compound. |
| Databáze: | OpenAIRE |
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