Spontaneous breaking of time-reversal symmetry in the orbital channel for the boundary Majorana flat bands

被引：25
作者：
Li, Yi [1 ]
Wang, Da [1 ]
Wu, Congjun [1 ]
机构：
[1] Univ Calif San Diego, Dept Phys, San Diego, CA 92093 USA
来源：
NEW JOURNAL OF PHYSICS | 2013年 / 15卷
基金：
美国国家科学基金会;
关键词：
NON-ABELIAN STATISTICS; P-WAVE; STATES; SUPERCONDUCTOR; SIGNATURE; NANOWIRE; VORTICES;
D O I：
10.1088/1367-2630/15/8/085002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the boundary Majorana modes for the single component p-wave weak topological superconductors or superfluids, which form zero energy flat bands protected by time-reversal symmetry in the orbital channel. However, due to the divergency of density of states, the band flatness of the edge Majorana modes is unstable under spontaneously generated spatial variations of Copper pairing phases. Staggered current loops appear near the boundary and thus time-reversal symmetry is spontaneously broke in the orbital channel. This effect can appear in both condensed matter and ultra-cold atom systems.
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页数：10
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