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Xiong, Y; Tong, PQ; Xiong, Y (reprint author), Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China.
Jackiw-Rebbi-type bound state carrying fractional fermion parity
发表期刊JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
语种英语
关键词Fractional States (Theory) Quantum Wires (Theory) Topology And Combinatorics
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.
2015
期号0页码:P02013
学科领域Mechanics ; Physics
DOIhttp://dx.doi.org/10.1088/1742-5468/2015/02/P02013
收录类别SCI
项目资助者State Key Program for Basic Research of China [2009CB929504, 2009CB929501] ; State Key Program for Basic Research of China [2009CB929504, 2009CB929501] ; State Key Program for Basic Research of China [2009CB929504, 2009CB929501] ; State Key Program for Basic Research of China [2009CB929504, 2009CB929501] ; National Foundation of Natural Science in China [10704040, 11175087] ; National Foundation of Natural Science in China [10704040, 11175087] ; National Foundation of Natural Science in China [10704040, 11175087] ; National Foundation of Natural Science in China [10704040, 11175087]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21102
专题理论物理所科研产出_SCI论文
通讯作者Xiong, Y (reprint author), Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China.
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Xiong, Y,Tong, PQ,Xiong, Y . Jackiw-Rebbi-type bound state carrying fractional fermion parity[J]. JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT,2015(0):P02013.
APA Xiong, Y,Tong, PQ,&Xiong, Y .(2015).Jackiw-Rebbi-type bound state carrying fractional fermion parity.JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT(0),P02013.
MLA Xiong, Y,et al."Jackiw-Rebbi-type bound state carrying fractional fermion parity".JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT .0(2015):P02013.
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