范霍夫奇点导致的 FCC 晶格哈伯德模型中巡回电子的元磁性

IF 0.48 Q4 Physics and Astronomy Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI:10.1134/S1062873824707694

F. A. Vasilevskiy, P. A. Igoshev, V. Yu. Irkhin

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引用次数: 0

摘要

在面心立方晶格的哈伯德模型中，研究了金属中的巡回偏磁相变。近邻和次近邻之间的转移积分之比被选定为在电子态密度中提供一个强范霍夫奇异性。获得了过渡区磁化的磁场依赖性，并研究了模型参数对所考虑现象的影响。

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Metamagnetism of Itinerant Electrons in the Hubbard Model for the FCC Lattice, Caused by the Van Hove Singularity

The itinerant metamagnetic phase transition in metals within the Hubbard model for a face-centered cubic lattice was studied. The ratio of the transfer integrals between the nearest and next-to-nearest neighbors was chosen to provide a strong van Hove singularity in the density of electronic states. The magnetic field dependencies of magnetization in the transition region were obtained, and the effect of model parameters on the phenomenon under consideration was investigated.

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来源期刊

Bulletin of the Russian Academy of Sciences: Physics Physics and Astronomy-Physics and Astronomy (all)

CiteScore

0.90

自引率

0.00%

发文量

251

期刊介绍： Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.