Interplay between real and pseudomagnetic field in graphene with strain

被引：60

作者：

Kim, Kyung-Joong ^{[1
]}

Blanter, Ya M. ^{[2
]}

Ahn, Kang-Hun ^{[1
,3
]}

机构：

[1] Chungnam Natl Univ, Dept Phys, Taejon 305764, South Korea

[2] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands

[3] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.84.081401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate electric and magnetic properties of graphene with rotationally symmetric strain. The strain generates a large pseudomagnetic field with alternating sign in space, which forms a strongly confined quantum dot connected to six chiral channels. The orbital magnetism, degeneracy, and channel opening can be understood from the interplay between the real and pseudomagnetic fields which have different parities under time reversal and mirror reflection. While the orbital magnetic response of the confined state is diamagnetic, it can be paramagnetic if there is an accidental degeneracy with opposite mirror reflection parity.

引用

页数：5

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