Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101977
Title: Simple mechanisms that impede the Berry phase identification from magneto-oscillations
Authors: Kuntsevich, A. Y.
Shupletsov, A. V.
Minkov, G. M.
Issue Date: 2018
Publisher: American Physical Society
Citation: Kuntsevich A. Y. Simple mechanisms that impede the Berry phase identification from magneto-oscillations / A. Y. Kuntsevich, A. V. Shupletsov, G. M. Minkov. — DOI 10.1103/PhysRevB.97.195431 // Physical Review B. — 2018. — Vol. 97. — Iss. 19. — 195431.
Abstract: The phase of quantum magneto-oscillations is often associated with the Berry phase and is widely used to argue in favor of topological nontriviality of the system (Berry phase 2πn+π). Nevertheless, the experimentally determined value may deviate from 2πn+π arbitrarily, therefore more care should be made analyzing the phase of magneto-oscillations to distinguish trivial systems from nontrivial. In this paper we suggest two simple mechanisms dramatically affecting the experimentally observed value of the phase in three-dimensional topological insulators: (i) magnetic field dependence of the chemical potential, and (ii) possible nonuniformity of the system. These mechanisms are not limited to topological insulators and can be extended to other topologically trivial and nontrivial systems. © 2018 American Physical Society.
Keywords: ELECTRIC INSULATORS
TOPOLOGY
BERRY PHASE
MAGNETIC FIELD DEPENDENCES
MAGNETO-OSCILLATION
NONUNIFORMITY
OBSERVED VALUES
FRUITS
URI: http://hdl.handle.net/10995/101977
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85047740631
PURE ID: 7277410
58b20e24-14ad-4ea7-9261-3e2479b8464f
ISSN: 24699950
DOI: 10.1103/PhysRevB.97.195431
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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