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Title: Bilayer, Hydrogenated and Fluorinated Graphene: QED versus SU(2) QCD Theory
Authors: Irkhin, V. Y.
Skryabin, Y. N.
Issue Date: 2020
Publisher: Pleiades Publishing
Citation: Irkhin V. Y. Bilayer, Hydrogenated and Fluorinated Graphene: QED versus SU(2) QCD Theory / V. Y. Irkhin, Y. N. Skryabin. — DOI 10.1134/S0021364020040025 // JETP Letters. — 2020. — Vol. 111. — Iss. 4. — P. 230-234.
Abstract: Motivated by recent experimental and computational investigations of bilayer, hydrogenated and fluorinated graphene, we apply the formalisms of U(1) quantum electrodynamics and SU(2) quantum chromodynamics theories of strongly correlated state. Unlike non-bipartite triangular lattice, on bipartite honeycomb lattice there always exists a monopole that transforms trivially under all the microscopic symmetries, destabilizing the Dirac spin liquid (DSL), so that one can continuously tune the DSL state to the state with parent SU(2) instead of U(1) gauge group. The SU(2) theory describes a spin-liquid state, which is different from usual DSL and is probably unstable with respect to Néel or valence-bond solid (VBS) phases, except for the quantum critical point. This point of view means a possibility of VBS states in graphene systems. © 2020, Pleiades Publishing, Inc.
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85079738207
PURE ID: 12927748
ISSN: 213640
DOI: 10.1134/S0021364020040025
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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