Title | Specular Andreev Reflection in the Interface of a Two-Dimensional Semiconductor with Rashba Spin-Orbit Coupling and a d-Wave Superconductor |
Authors | Lv, Bo Zhang, C. Ma, Zhongshui |
Affiliation | Peking Univ, Sch Phys, Beijing 100871, Peoples R China. Univ Wollongong, Sch Engn Phys, Wollongong, NSW 2522, Australia. |
Keywords | GRAPHENE JUNCTIONS TRANSPORT |
Issue Date | 2012 |
Publisher | 物理评论快报 |
Citation | PHYSICAL REVIEW LETTERS.2012,108,(6). |
Abstract | We reveal that the recently discovered specular Andreev reflection (SAR) [C. W. J. Beenakker, Phys. Rev. Lett. 97, 067007 (2006)] can occur in semiconductors where the spin-orbit coupling is finite. We demonstrate this finding in the hybrid of a two-dimensional electron gas with Rashba spin-orbit coupling and a superconductor. In the limit of low density or a strong spin-orbit coupling, specular Andreev reflection is finite. We also show that unit electron-hole conversion is possible in a specular Andreev reflection due to the different topological structures of the equal-energy surface between electrons and holes. The SAR in the semiconductor is determined by the relative orientation of wave vector to group velocity, which can be analyzed by ray equations. |
URI | http://hdl.handle.net/20.500.11897/295745 |
ISSN | 0031-9007 |
DOI | 10.1103/PhysRevLett.108.077002 |
Indexed | SCI(E) EI PubMed |
Appears in Collections: | 物理学院 |