Topological Superconductivity and the Fractional Josephson Effect in Quasi-One Dimensional Wires on a Plane

被引:0
|
作者
Nakhmedov, E. [1 ,2 ]
Mammadova, S. [1 ]
Alekperov, O. [1 ]
机构
[1] Azerbaijan Natl Acad Sci, Inst Phys, AZ-1143 Baku, Azerbaijan
[2] Univ Wurzburg, Inst Theoret Phys, D-97074 Wurzburg, Germany
关键词
Fermi Surface; JETP Letter; Orbit Interaction; Majorana Fermion; Topological Phase;
D O I
10.1134/S0021364016010100
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A time-reversal invariant topological superconductivity is suggested to be realized in a quasi-one-dimensional structure on a plane, which is fabricated by filling the superconducting materials into the periodic channel of dielectric matrices like zeolite and asbestos under high pressure. The topological superconducting phase sets up in the presence of large spin-orbit interactions when intra-wire s-wave and inter-wire d-wave pairings take place. Kramers pairs of Majorana bound states emerge at the edges of each wire. We analyze effects of the Zeeman magnetic field on Majorana zero-energy states. In-plane magnetic field was shown to make asymmetric the energy dispersion, nevertheless Majorana fermions survive due to protection of a particle-hole symmetry. Tunneling of Majorana quasiparticle from the end of one wire to the nearest-neighboring one yields edge fractional Josephson current with 4p-periodicity.
引用
收藏
页码:18 / 24
页数:7
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