The nonlocal transport and switch effect in light-and electric-controlled silicene–superconductor hybrid structure

• 来源期刊: 中国物理B（英文版）
• 关键词: switch effect silicene crossed Andreev reflection
• 年，卷（期）: 2018,（12）
• 页码范围: 137-143
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/12/127401

摘要

We theoretically investigate the influence of off-resonant circularly polarized light field and perpendicular electric field on the quantum transport in a monolayer silicene-based normal/superconducting/normal junction. Owing to the tun-able band structure of silicene, a pure crossed Andreev reflection process can be realized under the optical and electrical coaction. Moreover, a switch effect among the exclusive crossed Andreev reflection, the exclusive elastic cotunneling and the exclusive Andreev reflection, where the former two are the nonlocal transports and the third one is the local transport, can be obtained in our system by the modulation of the electric and light fields. In addition, the influence of the relevant parameters on the nonlocal and local transports is calculated and analyzed as well.