Spin-polarized ν=0 state of graphene: A spin superconductor

被引：19
|
作者：
Sun, Qing-feng [1 ,2 ]
Xie, X. C. [1 ,3 ]
机构：
[1] Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[3] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
来源：
PHYSICAL REVIEW B | 2013年 / 87卷 / 24期
关键词：
SUSPENDED BILAYER GRAPHENE; BROKEN-SYMMETRY STATES; ELECTRONIC-PROPERTIES;
D O I：
10.1103/PhysRevB.87.245427
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study the spin-polarized nu = 0 Landau-level state of graphene. Due to the electron-hole attractive interaction, electrons and holes can bound into pairs. These pairs can then condense into a spin-triplet superfluid ground state: a spin superconductor state. In this state, a gap opens up in the edge bands as well as in the bulk bands, thus it is a charge insulator, but it can carry the spin current without dissipation. These results can well explain the insulating behavior of the spin-polarized nu = 0 state in the recent experiments.
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页数：5
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