Majorana mode has attracted great theoretical and experimental interest. The experimental evidence is obtained in quantum wires. The origin theoretical proposals of quantum wires are the papers: 1、R. M. Lutchyn, J. D. Sau, and S. Das Sarma, Phys. Rev. Lett.105, 077001 (2010). 2、Y. Oreg, G. Refael, and F. von Oppen, Phys. Rev. Lett. 105, 177002 (2010)
I have a few questions about this topological superconductor system:
1、In topological nontrivial phase, the Majorana fermion is at the ends, what is the bulk states? Is it a p-wave states or s-wave states? What magnitude is the gap?
2、In topological trivial phase, what is the bulk states? Is it a insulator or superconductor？ If in superconducting phase, the electron pairing is s-wave or p-wave pairing? What magnitude is the gap?