2011年9月
Chiral symmetry restoration in monolayer graphene induced by Kekule distortion
PHYSICAL REVIEW B
- 巻
- 84
- 号
- 11
- 開始ページ
- 113402
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.84.113402
- 出版者・発行元
- AMER PHYSICAL SOC
We propose a chiral symmetry restoration mechanism in monolayer graphene, in analogy with the strongly coupled gauge theory. The chiral (sublattice) symmetry of graphene, which is spontaneously broken under the effectively strong Coulomb interaction, is restored by introducing the Kekule-patterned lattice distortion externally. Such a phase transition is investigated analytically using the techniques of strong-coupling expansion on the lattice gauge theory model by preserving the original honeycomb lattice structure. We discuss the relation between the chiral phase transition and the spectral gap amplitude, and we show the modification of the dispersion relation of the quasiparticles.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevB.84.113402
- ISSN : 1098-0121
- eISSN : 1550-235X
- Web of Science ID : WOS:000294565800003