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Kueppersbusch, Carolin and Fritz, Lars (2017). Modifications of the Lifshitz-Kosevich formula in two-dimensional Dirac systems. Phys. Rev. B, 96 (20). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

Starting from the Luttinger-Ward functional [J. M. Luttinger and J. C. Ward, Phys. Rev. 118, 1417 (1960)] we derive an expression for the oscillatory part of the grand potential of a two-dimensional Dirac system in a magnetic field. We perform the computation for the clean and the disordered system, and we study the effect of electron-electron interactions on the oscillations. Unlike in the two-dimensional electron gas (2DEG), a finite temperature and impurity scattering also affects the oscillation frequency. Furthermore, we find that in graphene, compared to the 2DEG, additional interaction induced damping effects occur: to two-loop order electron-electron interactions do lead to an additional damping factor in the amplitude of the Lifshitz-Kosevich formula.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kueppersbusch, Carolin UNSPECIFIED UNSPECIFIED UNSPECIFIED Fritz, Lars UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-211466
DOI:	10.1103/PhysRevB.96.205410
Journal or Publication Title:	Phys. Rev. B
Volume:	96
Number:	20
Date:	2017
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FERMI-LIQUID BEHAVIOR; GRAPHENE Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21146