Zero-energy Majorana states in a one-dimensional quantum wire with charge-density-wave instability

Article

关键词: MODEL;    SUPERCONDUCTOR;    DYNAMICS;    FERMIONS;   

DOI  :  10.1103/PhysRevB.89.195445

来源: SCIE

【 摘 要 】

A one-dimensional lattice with strong spin-orbit interactions (SOIs) and a Zeeman magnetic field is shown to lead to the formation of a helical charge-density-wave (CDW) state near half filling. The interplay between the magnetic field, SOI constants, and the CDW gap seems to support Majorana bound states under appropriate values of the external parameters. An explicit calculation of the quasiparticles' wave functions supports the formation of a localized zero-energy state, bounded to the sample end points. Symmetry classification of the system is provided. The relative value of the density of states shows a precise zero-energy peak at the center of the band in the nontrivial topological regime.

【 授权许可】

Free