Conduction Channels of an InAs-Al nanowire Josephson weak link
| Autor: | Peter Krogstrup, M. F. Goffman, Jesper Nygård, Hugues Pothier, Cristian Urbina, Charles Marcus |
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| Přispěvatelé: | Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Center for Quantum Devices and Station Q Copenhagen, University of Copenhagen = Københavns Universitet (KU), ANR-12-BS04-0016,MASH,Etats de Majorana et d'Andreev dans des circuits hybrides combinant des matériaux magnétiques et supraconducteurs(2012), ANR-16-CE30-0029,JETS,Effet Josephson, Topologie et Spins(2016), University of Copenhagen = Københavns Universitet (UCPH) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Josephson effect
Josephson junctions Nanowire Shell (structure) General Physics and Astronomy FOS: Physical sciences 02 engineering and technology 01 natural sciences Superconductivity (cond-mat.supr-con) Condensed Matter::Materials Science Condensed Matter::Superconductivity 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 010306 general physics quantum point contact [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] Superconductivity Physics mesoscopic superconductivity Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity Andreev Communicated by Carlo Beenakker 021001 nanoscience & nanotechnology Thermal conduction Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Characterization (materials science) [PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] Nonlinear system Transmission (telecommunications) nanowires Andreev reflection Andreev states nanowire 0210 nano-technology |
| Zdroj: | New Journal of Physics New Journal of Physics, Institute of Physics: Open Access Journals, 2017, 19, pp.092002. ⟨10.1088/1367-2630/aa7641⟩ Goffman, M F, Urbina, C, Pothier, H, Nygård, J, Marcus, C M & Jeppesen, P K 2017, ' Conduction channels of an InAs-Al nanowire Josephson weak link ', New Journal of Physics, vol. 19, 092002 . https://doi.org/10.1088/1367-2630/aa7641 New Journal of Physics, 2017, 19, pp.092002. ⟨10.1088/1367-2630/aa7641⟩ |
| ISSN: | 1367-2630 |
| DOI: | 10.1088/1367-2630/aa7641⟩ |
| Popis: | We present a quantitative characterization of an electrically tunable Josephson junction defined in an InAs nanowire proximitized by an epitax-ially-grown superconducting Al shell. The gate-dependence of the number of conduction channels and of the set of transmission coefficients are extracted from the highly nonlinear current-voltage characteristics. Although the transmissions evolve non-monotonically, the number of independent channels can be tuned, and configurations with a single quasi-ballistic channel achieved. Added reference in New Journal of Physics, corrected a few typos, and updated references |
| Databáze: | OpenAIRE |
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