Low-frequency magnetic oscillations induced by strongly electron correlations

Autor:	Alexei Sherman
Rok vydání:	2022
Předmět:	Condensed Matter::Quantum Gases Condensed Matter - Strongly Correlated Electrons Strongly Correlated Electrons (cond-mat.str-el) FOS: Physical sciences General Materials Science Condensed Matter::Strongly Correlated Electrons Condensed Matter Physics Atomic and Molecular Physics and Optics
DOI:	10.48550/arxiv.2205.03064
Popis:	To explain the low frequencies of quantum oscillations observed in lightly doped cuprates, we consider the two-dimension Hubbard model supplemented with the perpendicular magnetic field. For large Hubbard repulsions, the electron spectrum is investigated using the cluster perturbation theory. Obtained frequencies of magnetic oscillations at small deviations from half-filling are close to those observed experimentally, $F\approx500$~T. They stem from small Fermi surface pockets located in the nodal regions of the Brillouin zone. The pockets are formed by Fermi arcs and less intensive segments, which make the pockets nearly circular. Comment: 13 pages, 4 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a73e798321c703d6b153bbefbf64d89e Zobrazit plný text záznamu