Eberly College of Arts and Sciences
Physics and Astronomy
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 peak phase in the space of gate voltage and external magnetic field. Our findings are consistent with calculations for a finite-length topological nanowire and provide means for Majorana manipulation as required for braiding and topological quantum bits.
Digital Commons Citation
Chen, Jun; Yu, Peng; Stenger, John; Car, Diana; Plissard, Sebastien R.; Bakkers, Erik P A M; Stanescu, Tudor D.; and Frolov, Sergey M., "Experimental phase diagram of zero-bias conductance peaks in superconductor/semiconductor nanowire devices" (2017). Faculty & Staff Scholarship. 1506.
Chen, J., Yu, P., Stenger, J., Hocevar, M., Car, D., Plissard, S. R., … Frolov, S. M. (2017). Experimental phase diagram of zero-bias conductance peaks in superconductor/semiconductor nanowire devices. Science Advances, 3(9), e1701476. https://doi.org/10.1126/sciadv.1701476