Signatures of Interactions in the Andreev Spectrum of Nanowire Josephson Junctions
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Signatures of Interactions in the Andreev Spectrum of Nanowire Josephson Junctions. / Matute-Canadas, F. J.; Metzger, C.; Park, Sunghun; Tosi, L.; Krogstrup, P.; Nygard, J.; Goffman, M. F.; Urbina, C.; Pothier, H.; Yeyati, A. Levy.
In: Physical Review Letters, Vol. 128, No. 19, 197702, 12.05.2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Signatures of Interactions in the Andreev Spectrum of Nanowire Josephson Junctions
AU - Matute-Canadas, F. J.
AU - Metzger, C.
AU - Park, Sunghun
AU - Tosi, L.
AU - Krogstrup, P.
AU - Nygard, J.
AU - Goffman, M. F.
AU - Urbina, C.
AU - Pothier, H.
AU - Yeyati, A. Levy
PY - 2022/5/12
Y1 - 2022/5/12
N2 - We performed microwave spectroscopy of an InAs nanowire between superconducting contacts implementing a finite-length, multichannel Josephson weak link. Certain features in the spectra, such as the splitting by spin-orbit interactions of the transition lines among Andreev states, have been already understood in terms of noninteracting models. However, we identify here additional transitions, which evidence the presence of Coulomb interactions. By combining experimental measurements and model calculations, we reach a qualitative understanding of these very rich Andreev spectra.
AB - We performed microwave spectroscopy of an InAs nanowire between superconducting contacts implementing a finite-length, multichannel Josephson weak link. Certain features in the spectra, such as the splitting by spin-orbit interactions of the transition lines among Andreev states, have been already understood in terms of noninteracting models. However, we identify here additional transitions, which evidence the presence of Coulomb interactions. By combining experimental measurements and model calculations, we reach a qualitative understanding of these very rich Andreev spectra.
KW - COHERENT MANIPULATION
KW - GAP STRUCTURE
KW - TRANSPORT
KW - CHANNEL
U2 - 10.1103/PhysRevLett.128.197702
DO - 10.1103/PhysRevLett.128.197702
M3 - Journal article
C2 - 35622049
VL - 128
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 19
M1 - 197702
ER -
ID: 315765510