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TT: Fachverband Tiefe Temperaturen
TT 44: Focused Session: Majorana Fermions in Condensed Matter (jointly with DS, HL, MA, and O)
TT 44.2: Invited Talk
Wednesday, March 13, 2013, 15:30–16:00, H20
New Measurements on Nanowire Majorana Systems — •Charles Marcus1,3, Hugh Churchill2,3, 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.