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This article is cited in 2 scientific papers (total in 2 papers)
Graphenes
Magnetic states of the zigzag edge of a graphene nanoribbon
S. Yu. Davydov Ioffe Institute, St. Petersburg
Abstract:
Using a simple structural model and the multicenter Anderson Hamiltonian, Green's functions are obtained for the atoms of the zigzag edge of an epitaxial graphene nanoribbon. The electronic structure of the free nanoribbon is discussed in detail. Specifically, expressions for the band spectrum and density of states are found and estimates of the occupation numbers and magnetic moments are given. For a nanoribbon strongly bonded to a metal substrate, the criteria for the appearance of magnetic moments are determined. As it is shown for both free and epitaxial nanoribbons, the probability of the appearance of magnetic moments and their magnitude for zigzag edge atoms that have two nearest neighbors is higher than for atoms with three nearest neighbors.
Keywords:
magnetic moment, chain model, electronic structure, density of states, occupation numbers.
Received: 13.07.2019 Revised: 13.07.2019 Accepted: 16.07.2019
Citation:
S. Yu. Davydov, “Magnetic states of the zigzag edge of a graphene nanoribbon”, Fizika Tverdogo Tela, 62:1 (2020), 180–185; Phys. Solid State, 62:1 (2020), 223–229
Linking options:
https://www.mathnet.ru/eng/ftt8541 https://www.mathnet.ru/eng/ftt/v62/i1/p180
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