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Andreev reflection in Euler materials

Published version
Peer-reviewed

Repository DOI


Change log

Authors

Morris, AS 
Bouhon, A 
Slager, RJ 

Abstract

jats:titleAbstract</jats:title> jats:pMany 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 jats:italicn</jats:italic> > 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 jats:italicn</jats:italic> even but not jats:italicn</jats:italic> odd. This gives a possible route through which the recently discovered Euler topology could be probed experimentally.</jats:p>

Description

Funder: Trinity College Cambridge

Keywords

51 Physical Sciences, 5104 Condensed Matter Physics

Journal Title

New Journal of Physics

Conference Name

Journal ISSN

1367-2630
1367-2630

Volume Title

26

Publisher

IOP Publishing
Sponsorship
Engineering and Physical Sciences Research Council (New Investigator Award - EP/W00187X/1, PhD Studentship - Project reference 2606546)
Marie-Curie Fellowship (101025315)