Sd2 graphene: kagome band in a hexagonal lattice

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Publication Type pre-print
School or College College of Engineering
Department Materials Science & Engineering
Creator Liu, Feng
Other Author Zhou, Miao; Liu, Zheng; Ming, Wenmei; Wang, Zhengfei
Title Sd2 graphene: kagome band in a hexagonal lattice
Date 2014-01-01
Description Graphene, made of sp2 hybridized carbon, is characterized with a Dirac band, representative of its underlying 2D hexagonal lattice. The fundamental understanding of graphene has recently spurred a surge in the search for 2D topological quantum phases in solid-state materials. Here, we propose a new form of 2D material, consisting of sd2 hybridized transition metal atoms in hexagonal lattice, called sd2 "graphene." The sd2 graphene is characterized by bond-centered electronic hopping, which transforms the apparent atomic hexagonal lattice into the physics of a kagome lattice that may exhibit a wide range of topological quantum phases. Based on first-principles calculations, room-temperature quantum anomalous Hall states with an energy gap of ∼0.1 eV are demonstrated for one such lattice made of W, which can be epitaxially grown on a semiconductor surface of 1=3 monolayer Cl-covered Si(111), with high thermodynamic and kinetic stability.
Type Text
Publisher American Physical Society
Volume 113
Issue 23
First Page 236802-1
Last Page 236802-5
Language eng
Bibliographic Citation Zhou, M., Liu, Z., Ming, W., Wang, Z., & Liu, F. (2014). Sd2 graphene: kagome band in a hexagonal lattice. Physical Review Letters, 113(23), 236802-1-236802-5.
Rights Management (c) American Physical Society 10.1103/PhysRevLett.113.236802.
Format Medium application/pdf
Format Extent 1,162,501 bytes
Identifier uspace,19244
ARK ark:/87278/s65q8563
Setname ir_uspace
Date Created 2015-01-30
Date Modified 2021-05-06
ID 712795
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