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题名: Jackiw-Rebbi-type bound state carrying fractional fermion parity
作者: Xiong, Y;  Tong, PQ
刊名: JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
出版日期: 2015
期号: 0, 页码:P02013
关键词: fractional states (theory) ;  quantum wires (theory) ;  topology and combinatorics
学科分类: Mechanics ;  Physics
DOI: http://dx.doi.org/10.1088/1742-5468/2015/02/P02013
通讯作者: Xiong, Y (reprint author), Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China.
文章类型: Article
英文摘要: We find the coexistence of two kinds of fractionalized modes, Majorana modes at the geometric ends and Jackiw-Rebbi-type bound state (JRBS) at a domain-wall, in a new topological superconducting phase in one-dimensional (1D) systems. Each localized JRBS carries a new fractional quantity, half of the parity of the fermion number. This induces a topological protected crossing at the zero energy for its eigenenergy. For a chain embedded with a JRBS, it is possible to switch between the occupied and the empty states of the Majorana zero energy state (MZES) by varying the strength of the external magnetic field across that crossing point. This enables a way to encode a quantum qubit into one MZES without breaking parity conservation. We propose that such JRBS and Majorana fermions may appear in two 1D models. One may be implemented in an artificial lattice with staggered hopping, staggered spin-orbital interaction and staggered superconducting pairing in cold fermion atoms. The other is a 1D semiconductor chain sandwiched between s-wave superconductor and antiferromagnet.
类目[WOS]: Mechanics ;  Physics, Mathematical
关键词[WOS]: WANNIER FUNCTIONS ;  SOLITONS ;  POLYACETYLENE
收录类别: SCI
项目资助者: State Key Program for Basic Research of China [2009CB929504, 2009CB929501] ;  National Foundation of Natural Science in China [10704040, 11175087]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21102
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Xiong, Y,Tong, PQ. Jackiw-Rebbi-type bound state carrying fractional fermion parity[J]. JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT,2015(0):P02013.
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