ITP OpenIR  > 理论物理所2014年知识产出
Probing zero modes of a defect in a Kitaev quantum wire
Li, SW; Li, ZZ; Cai, CY; Sun, CP; Li, SW (reprint author), Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China.
2014
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号89期号:13页码:134505
摘要The Kitaev quantum wire (KQW) model with open boundary possesses two Majorana edge modes. When the local chemical potential on a defect site is much higher than that on other sites and than the hopping energy, the electron hopping is blocked at this site. We show that the existence of such a defect on a closed KQW also gives rise to two low-energy modes, which can simulate the edge modes. The energies of the defect modes vanish to zero as the local chemical potential of the defect increase to infinity. We develop a quantum Langevin equation to study the transport of KQW for both open and closed cases. We find that when the lead is contacted with the site beside the defect, we can observe two splitted peaks around the zero-bias voltage in the differential conductance spectrum, whereas if the lead is contacted with the bulk of the quantum wire far from the the defect or the open edges, we cannot observe any zero-bias peak.
部门归属[Li, Sheng-Wen
关键词Majorana Fermions Anyons Superconductor Computation
学科领域Physics
资助者National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516] ; National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516] ; National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516] ; National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516]
DOI10.1103/PhysRevB.89.134505
URL查看原文
收录类别SCI
语种英语
资助者National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516] ; National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516] ; National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516] ; National Natural Science Foundation of China [11121403, 10935010, 11074261]; National 973-program [2012CB922104]; Postdoctoral Science Foundation of China [2013M530516]
WOS记录号WOS:000334119300003
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15788
专题理论物理所2014年知识产出
通讯作者Li, SW (reprint author), Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China.
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GB/T 7714
Li, SW,Li, ZZ,Cai, CY,et al. Probing zero modes of a defect in a Kitaev quantum wire[J]. PHYSICAL REVIEW B,2014,89(13):134505.
APA Li, SW,Li, ZZ,Cai, CY,Sun, CP,&Li, SW .(2014).Probing zero modes of a defect in a Kitaev quantum wire.PHYSICAL REVIEW B,89(13),134505.
MLA Li, SW,et al."Probing zero modes of a defect in a Kitaev quantum wire".PHYSICAL REVIEW B 89.13(2014):134505.
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