2017/06/30 by M. F. Goffman, C. Urbina, H. Pothier +5 · 3 citations
Physics and Astronomy · #Channel (broadcasting) #Condensed matter physics #Electrical engineering #Josephson effect #Mechanical and Optical Resonators #Nanowire #Optoelectronics #Physics #Quantum and electron transport phenomena #Quantum mechanics #Superconductivity #Thermal conduction #Topological Materials and Phenomena #Transmission (telecommunications) #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1088/1367-2630/aa7641
published as New Journal of Physics, Institute of Physics: Open Access Journals, 2017, 19, pp.092002 · Added reference in New Journal of Physics, corrected a few typos, and updated references
openalex publication_date 2017/09/20 · arxiv created 2017/09/27 · arxiv updated 2017/09/28 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
We present a quantitative characterization of an electrically tunable Josephson junction defined in an InAs nanowire proximitized by an epitaxially-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.