Specular Andreev reflection in thin films of topological insulators
Leyla Majidi, Reza Asgari
DOI 10.1103/PhysRevB.93.195404 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We theoretically reveal the possibility of specular Andreev reflection in a thin film topological insulator normal-superconductor (N/S) junction in the presence of a gate electric field. The probability of specular Andreev reflection increases with the electric field, and electron-hole conversion with unit efficiency happens in a wide experimentally accessible range of the electric field. We show that perfect specular Andreev reflection can occur for all angles of incidence with a particular excitation energy value. In addition, we find that the thermal conductance of the structure displays exponential dependence on the temperature. Our results reveal the potential of the proposed topological insulator thin-film-based N/S structure for the realization of intraband specular Andreev reflection.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Se3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Enhanced specular Andreev reflection in bilayer graphene
similarity 0.97Abhiram Soori et al.
Source status unknown — claims are unverified
Crossover from retro to specular Andreev reflections in bilayer graphene
similarity 0.97Dmitri K. Efetov & Konstantin B. Efetov
Source status unknown — claims are unverified
Magnetoanisotropic spin-triplet Andreev reflection in ferromagnet-Ising superconductor junctions
similarity 0.96Peng Lv et al.
Source status unknown — claims are unverified
Nonlinear optical responses in multiorbital topological superconductors
similarity 0.95Arpit Raj et al.
Source status unknown — claims are unverified
Chiral Topological Superconductivity in Superconductor-Obstructed Atomic Insulator-Ferromagnetic Insulator Heterostructures
similarity 0.94Jingnan Hu et al.
Source status unknown — claims are unverified
Subtlety of modes trapped by vortices in a topological superconducting heterostructure
similarity 0.94Xin-Hai Tu et al.
Source status unknown — claims are unverified