Tunneling Spectroscopy of Quasiparticle Bound States in a Spinful Josephson Junction

TY - JOUR

T1 - Tunneling Spectroscopy of Quasiparticle Bound States in a Spinful Josephson Junction

AU - Chang, W.

AU - Manucharyan, V.E.

AU - Jespersen, Thomas Sand

AU - Nygård, Jesper

AU - Marcus, Charles M.

PY - 2013/5/23

Y1 - 2013/5/23

N2 - The spectrum of a segment of InAs nanowire, confined between two superconducting leads, was measured as function of gate voltage and superconducting phase difference using a third normal-metal tunnel probe. Subgap resonances for odd electron occupancy - interpreted as bound states involving a confined electron and a quasiparticle from the superconducting leads, reminiscent of Yu-Shiba-Rusinov states - evolve into Kondo-related resonances at higher magnetic fields. An additional zero-bias peak of unknown origin is observed to coexist with the quasiparticle bound states.

AB - The spectrum of a segment of InAs nanowire, confined between two superconducting leads, was measured as function of gate voltage and superconducting phase difference using a third normal-metal tunnel probe. Subgap resonances for odd electron occupancy - interpreted as bound states involving a confined electron and a quasiparticle from the superconducting leads, reminiscent of Yu-Shiba-Rusinov states - evolve into Kondo-related resonances at higher magnetic fields. An additional zero-bias peak of unknown origin is observed to coexist with the quasiparticle bound states.

U2 - 10.1103/PhysRevLett.110.217005

DO - 10.1103/PhysRevLett.110.217005

M3 - Journal article

SN - 0031-9007

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 217005

ER -