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O: Fachverband Oberflächenphysik

O 50: Focussed Session: Majorana Fermions in Condensed Matter (jointly with DS, HL, MA, and TT)

O 50.2: Hauptvortrag

Mittwoch, 13. März 2013, 15:30–16:00, H20

New Measurements on Nanowire Majorana Systems — •Charles Marcus^1,3, Hugh Churchill^2,3, Mintang Deng⁴, and Hongqi Xu⁴ — ¹Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, Copenhagen, DK — ²Department of Physics, MIT, Cambridge, MA USA — ³Department of Physics, Harvard University, Cambridge, MA USA — ⁴Division of Solid State Physics, Lund University, Lund, Sweden

This talk will present recent measurements on gated InSb nanowires coupled to a superconducting film. This set-up is one designed to detect Majorana end states. We show data similar to that seen in other groups recently, and also extend measurements in a number of directions, including higher field and higher conductance. Oscillatory structure suggesting interacting end-state Majoranas is found. We also identify transport regimes where even-odd Kondo-like features are evident, combined with Andreev bound states.

This research is sponsored by Microsoft Project Q, the Danish National Research Foundation, and Harvard University.