2013年10月
Reentrant topological transitions with Majorana end states in one-dimensional superconductors by lattice modulation
PHYSICAL REVIEW B
- ,
- 巻
- 88
- 号
- 15
- 開始ページ
- 155428
- 終了ページ
- 155428
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.88.155428
- 出版者・発行元
- AMER PHYSICAL SOC
The possibility to observe and manipulate Majorana fermions as end states of one-dimensional topological superconductors has been actively discussed recently. In a quantum wire with strong spin-orbit coupling placed in proximity to a bulk superconductor, a topological superconductor has been expected to be realized when the band energy is split by the application of a magnetic field. When a periodic lattice modulation is applied, multiple topological superconductor phases appear in the phase diagram. Some of them occur for higher filling factors compared to the case without the modulation. We study the effects of phase jumps and argue that the topologically nontrivial state of the whole system is retained even if they are present. We also study the effect of the spatial modulation in the hopping parameter.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevB.88.155428
- ISSN : 1098-0121
- eISSN : 1550-235X
- Web of Science ID : WOS:000326087100011