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 http://dx.doi.org/DOI: 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 |
ID |
712795 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s65q8563 |