Work

Andreev reflection in Euler materials

Year: 2024

Type: article

Abstract: Many previous studies of Andreev reflection have demonstrated that unusual effects can occur in media which have a nontrivial bulk topology. Following this line of investigation, we study Andreev reflection by analysing a simple model of a bulk node with a generic winding number n > 0, where the even cases directly relate to topological Euler materials. We find that the magnitudes of the resultant reflection coefficients depend strongly on whether the winding is even or odd. Moreover this parity dependence is reflected in the differential conductance curves, which are highly suppressed for n even but not n odd. This gives a possible route through which the recently discovered Euler topology could be probed experimentally.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/ad1d74

Authors: Arthur S Morris, Adrien Bouhon, Robert-Jan Slager

Institution: University of Cambridge

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,485

Funders: European Commission, Engineering and Physical Sciences Research Council, Trinity College, University of Cambridge