Imaging chiral Andreev reflection in the presence of Rashba spin-orbit coupling

In this work, the transverse magnetic focusing of pseudospin-1 fermions in two-dimensional materials with a superconducting contact is studied. The transmission coefficient and Andreev reflection coefficient from injector lead to collector lead are calculated based on the Landauer–Büttiker formula combined with the non-equilibrium Green's function method. The local state density diagrams of the electron and hole transmission in the center region are given, which provide a complete image of the ballistic electron–hole cyclotron orbits. Using these images, the positive longitudinal shift in Andreev reflection of the pseudospin-1 fermion can be obviously seen. Furthermore, it is found that the total offset is proportional to the number of Andreev reflection occurrence. This setup provides the possibility of detecting this shift experimentally.

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Signatures of triplet superconductivity in ν=2 chiral Andreev states

Arrachea,

Yeyati,

Balseiro

2024

Phys. Rev. B

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Imaging chiral Andreev reflection in the presence of Rashba spin-orbit coupling

Cited by 3 publications

References 38 publications

Channel-resolved wavefunctions of transverse magnetic focusing

Channel-resolved wavefunctions of transverse magnetic focusing

Andreev reflection imaging and longitudinal shift of pseudospin-1 fermions in two-dimensional materials

Signatures of triplet superconductivity in ν=2 chiral Andreev states

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