Quantum critical points in tunneling junction of topological superconductor and topological insulator

摘要: Abstract The tunneling junction between one-dimensional topological superconductor and integer (fractional) insulator (TI), realized via point contact, is investigated theoretically with bosonization technology renormalization group methods. For the TI case, in a finite range of edge interaction parameter, there non-trivial stable fixed which corresponds to physical picture that breaks up into two sections at junction, one side coupling strongly Majorana fermion exhibiting perfect Andreev reflection, while other decouples, normal reflection low energies. This can be used as signature tested by nowadays experiment techniques. fractional universal low-energy transport properties are described or insulating points dependent on filling fraction parameter TI.