Chiral Symmetry and Many-Body Effect in Multi layer Graphene

被引：0
|
作者：
Hamamoto, Yuji [1 ]
Kawarabayashi, Tohru [2 ]
Aoki, Hideo [2 ,3 ]
Hatsugai, Yasuhiro [1 ,4 ]
机构：
[1] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan
[2] Toho Univ, Dept Phys, Chiba 2748510, Japan
[3] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
[4] Univ Tsukuba, TIMS, Tsukuba, Ibaraki 3058571, Japan
来源：
20TH INTERNATIONAL CONFERENCE ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS (HMF-20) | 2013年 / 456卷
关键词：
ELECTRON-ELECTRON INTERACTIONS; NEUTRINOS; ABSENCE; LATTICE; STATE;
D O I：
10.1088/1742-6596/456/1/012013
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Influence of the chiral symmetry on the many-body problem in multilayer graphene in magnetic fields is investigated. For a spinless electron model on the honeycomb lattice the many-body ground state is shown to be a doubly-degenerate chiral condensate irrespective of the number of layers. The energy spectrum calculated numerically with the exact diagonalization method reveals for ABC-stacked multilayer graphenes that the many-body gap decreases monotonically with the number of layers.
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页数：6
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