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Hybrid Monte Carlo study of monolayer graphene with partially screened Coulomb interactions at finite spin densityстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 октября 2018 г.
- Авторы: Körner Michael, Smith Dominik, Buividovich Pavel, Ulybyshev Maksim, von Smekal Lorenz
- Журнал: Physical Review B
- Том: 96
- Номер: 19
- Год издания: 2017
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 195408
- DOI: 10.1103/PhysRevB.96.195408
- Аннотация: We report on Hybrid Monte Carlo simulations at finite spin density of the pi-band electrons in monolayer graphene with realistic interelectron interactions. Unlike simulations at finite charge-carrier density, these are not affected by a fermion-sign problem. Our results are in qualitative agreement with an interaction-induced warping of the Fermi contours and a reduction of the bandwidth as observed in angle-resolved photoemission spectroscopy experiments on charge-doped graphene systems. Furthermore, we find evidence that the neck-disrupting Lifshitz transition, which occurs when the Fermi level traverses the van Hove singularity (VHS), becomes a true quantum phase transition due to interactions. This is in line with an instability of the VHS toward the formation of ordered electronic phases, which has been predicted by a variety of different theoretical approaches.
- Добавил в систему: Улыбышев Максим Владимирович