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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2011, Volume 94, Issue 9, Pages 783–787
(Mi jetpl2380)
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This article is cited in 5 scientific papers (total in 5 papers)
METHODS OF THEORETICAL PHYSICS
Perturbation theory for a hamiltonian linear in quasimomentum
L. A. Falkovskyab a L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences
b Institute for High Pressure Physics, Russian Academy of Sciences
Abstract:
Perturbation theory has been proposed to take into account small terms in the multiband Hamiltonian, which lead to significant changes such as the trigonal warping of the Fermi surface. The theory is similar to the “cross technique” and is reduced to the self-energy corrections to the matrix Green’s function. A particular application to graphite and a graphene bilayer has been given.
Received: 01.09.2011
Citation:
L. A. Falkovsky, “Perturbation theory for a hamiltonian linear in quasimomentum”, Pis'ma v Zh. Èksper. Teoret. Fiz., 94:9 (2011), 783–787; JETP Letters, 94:9 (2011), 723–727
Linking options:
https://www.mathnet.ru/eng/jetpl2380 https://www.mathnet.ru/eng/jetpl/v94/i9/p783
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