2012/03/31 by Liang Chen, Shaolong Wan · 4 citations
Materials Science · Physics and Astronomy · #2D Materials and Applications #Bound state #Function (biology) #Pairing #Quantum and electron transport phenomena #Rotation (mathematics) #Superconductivity #Surface (topology) #Topological Materials and Phenomena #Topology (electrical circuits) #cond-mat.other #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1088/0953-8984/25/21/215702
published in Journal of Physics Condensed Matter 25(21), 215702 (IOP Publishing) · 5 pages, 3 figures
arxiv created 2012/03/31 · openalex publication_date 2013/05/02 · arxiv updated 2013/05/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We propose three possible momentum-dependent pairing potentials as candidates for topological superconductors (for example CuxBi2Se3), and calculate the surface spectral function and surface density of states with these pairing potentials. We find that the first two can give the same spectral functions as the fully gapped and node-contacted pairing potentials given by Fu and Berg (2010 Phys. Rev. Lett. 105 097001), and that the third one can obtain a topological non-trivial case in which there exists a flat Andreev bound state and which preserves the threefold rotation symmetry. We hope our proposals and results will be assessed by future experiment.