2003/04/24 by J. G. Rodrigo, Hermann Suderow, H. Suderow +2 · 1 citation
Physics and Astronomy · #Composite material #Condensed matter physics #Coupling (piping) #Dissipation #Josephson effect #Magnetic field #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum tunnelling #Superconductivity #Surface and Thin Film Phenomena #Thermal #Thermal fluctuations #Thermodynamics #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1002/pssb.200301798
published as phys. stat. sol. (b) 237, No.1, 386-393 (2003) · 17 pages, 7 figures
arxiv created 2003/04/24 · openalex publication_date 2003/04/24 · arxiv updated 2015/06/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract We report on the study of superconducting nanotips and nanobridges of lead with a Scanning Tunnelling Microscope in tunnel and point contact regimes. We deal with three different structures. A nanotip that remains superconducting under a field of 2 T. For this case we present model calculations of the order parameter, which are in good agreement with the experiments. An asymmetric nanobridge of lead showing a two steps loss of the Andreev excess current due to different heating and dissipation phenomena in each side of the structure. A study of the effect of the thermal fluctuations on the Josephson coupling between the two sides of a superconducting nanobridge submitted to magnetic fields. The different experiments were made under magnetic fields up to twenty five times the volume critical field of lead, and in a temperature range between 0.6 K and 7.2 K.