Generic quantized zero-bias conductance peaks in superconductor-semiconductor hybrid structures

Experimental phase diagram of zero-bias conductance peaks in superconductor/semiconductor nanowire devices

Topological superconductivity is an exotic state of matter characterized by spinless p-wave Cooper pairing of electrons and by Majorana zero modes at the edges. The first signature of topological superconductivity is a robust zero-bias peak in tunneling conductance. We perform tunneling experiments on semiconductor nanowires (InSb) coupled to superconductors (NbTiN) and establish the zero-bias ...

Title Anomaly of zero-bias conductance peaks in ferromagnet/d-wave superconductor junctions

Quantized conductance doubling and hard gap in a two-dimensional semiconductor–superconductor heterostructure

Coupling a two-dimensional (2D) semiconductor heterostructure to a superconductor opens new research and technology opportunities, including fundamental problems in mesoscopic superconductivity, scalable superconducting electronics, and new topological states of matter. One route towards topological matter is by coupling a 2D electron gas with strong spin-orbit interaction to an s-wave supercon...

Parity independence of the zero-bias conductance peak in a nanowire based topological superconductor-quantum dot hybrid device

We explore the signatures of Majorana fermions in a nanowire based topological superconductor-quantum dot-topological superconductor hybrid device by charge transport measurements. At zero magnetic field, well-defined Coulomb diamonds and the Kondo effect are observed. Under the application of a finite, sufficiently strong magnetic field, a zero-bias conductance peak structure is observed. It i...

Andreev scattering and conductance enhancement in mesoscopic semiconductor–superconductor junctions

X iv :c on dm at /9 91 13 72 v1 [ co nd -m at .m es -h al l] 2 3 N ov 1 99 9 Andreev scattering and conductance enhancement in mesoscopic semiconductor–superconductor junctions Niels Asger Mortensen, Antti-Pekka Jauho, Karsten Flensberg Mikroelektronik Centret, Technical University of Denmark, Building 345 east, DK-2800 Lyngby, Denmark Ørsted Laboratory, Niels Bohr Institute, University of Cope...