Quantum anomalous Hall effect in graphene from Rashba and exchange effects

Zhenhua Qiao; Shengyuan A. Yang; Wanxiang Feng; Wang Kong Tse; Jun Ding; Yugui Yao; Jian Wang; Qian Niu

doi:10.1103/PhysRevB.82.161414

Quantum anomalous Hall effect in graphene from Rashba and exchange effects

Zhenhua Qiao^*, Shengyuan A. Yang, Wanxiang Feng, Wang Kong Tse, Jun Ding, Yugui Yao, Jian Wang, Qian Niu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

612 Citations (Scopus)

Abstract

We investigate the possibility of realizing quantum anomalous Hall effect in graphene. We show that a bulk energy gap can be opened in the presence of both Rashba spin-orbit coupling and an exchange field. We calculate the Berry curvature distribution and find a nonzero Chern number for the valence bands and demonstrate the existence of gapless edge states. Inspired by this finding, we also study, by first-principles method, a concrete example of graphene with Fe atoms adsorbed on top, obtaining the same result.

Original language	English
Article number	161414
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.82.161414
Publication status	Published - 20 Oct 2010
Externally published	Yes

Access to Document

10.1103/PhysRevB.82.161414

Cite this

@article{e2c1dd0b1c9442bc88782efb7794e863,

title = "Quantum anomalous Hall effect in graphene from Rashba and exchange effects",

abstract = "We investigate the possibility of realizing quantum anomalous Hall effect in graphene. We show that a bulk energy gap can be opened in the presence of both Rashba spin-orbit coupling and an exchange field. We calculate the Berry curvature distribution and find a nonzero Chern number for the valence bands and demonstrate the existence of gapless edge states. Inspired by this finding, we also study, by first-principles method, a concrete example of graphene with Fe atoms adsorbed on top, obtaining the same result.",

author = "Zhenhua Qiao and Yang, {Shengyuan A.} and Wanxiang Feng and Tse, {Wang Kong} and Jun Ding and Yugui Yao and Jian Wang and Qian Niu",

year = "2010",

month = oct,

day = "20",

doi = "10.1103/PhysRevB.82.161414",

language = "English",

volume = "82",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "16",

}

TY - JOUR

T1 - Quantum anomalous Hall effect in graphene from Rashba and exchange effects

AU - Qiao, Zhenhua

AU - Yang, Shengyuan A.

AU - Feng, Wanxiang

AU - Tse, Wang Kong

AU - Ding, Jun

AU - Yao, Yugui

AU - Wang, Jian

AU - Niu, Qian

PY - 2010/10/20

Y1 - 2010/10/20

N2 - We investigate the possibility of realizing quantum anomalous Hall effect in graphene. We show that a bulk energy gap can be opened in the presence of both Rashba spin-orbit coupling and an exchange field. We calculate the Berry curvature distribution and find a nonzero Chern number for the valence bands and demonstrate the existence of gapless edge states. Inspired by this finding, we also study, by first-principles method, a concrete example of graphene with Fe atoms adsorbed on top, obtaining the same result.

AB - We investigate the possibility of realizing quantum anomalous Hall effect in graphene. We show that a bulk energy gap can be opened in the presence of both Rashba spin-orbit coupling and an exchange field. We calculate the Berry curvature distribution and find a nonzero Chern number for the valence bands and demonstrate the existence of gapless edge states. Inspired by this finding, we also study, by first-principles method, a concrete example of graphene with Fe atoms adsorbed on top, obtaining the same result.

UR - http://www.scopus.com/inward/record.url?scp=78149287627&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.82.161414

DO - 10.1103/PhysRevB.82.161414

M3 - Article

AN - SCOPUS:78149287627

SN - 1098-0121

VL - 82

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 16

M1 - 161414

ER -

Quantum anomalous Hall effect in graphene from Rashba and exchange effects

Abstract

Access to Document

Other files and links

Fingerprint

Cite this