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Showing 1 to 11 of 11 for “"Tunneling Measurements"”.
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Thermodynamic and tunneling measurements of van der Waals heterostructures
… techniques towards this goal: capacitance measurements that probe the thermodynamic ground state of an electronic system and planar tunneling measurements that access its quasiparticle excitation spectrum. Both techniques were applied to van der Waals materials, a class of crystals composed …
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Probing the Superconducting Gap of Lead With Ballistic Phonons
… meV)are consistent with accepted values from tunneling measurements. Phonon imaging experiments do not support the existence of an SDW ground state in Pb.
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Electron Tunneling Study of Superconductors Doped With Magnetic Atoms and Nonmagnetic Resonant State Atoms: Indium-Chromium, Zinc-Manganese, and Aluminum-Manganese
We have used electron tunneling measurements to determine the density of states of quench-condensed thin films of In-Cr, Zn-Mn, and Al-Mn, and of annealed thin films of Zn-Mn. The results on In-Cr and Zn-Mn were compared with Shiba's theory for magnetic atoms in superconductors. We observed the …
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Electronic thermal conductivity of superconducting lead-manganese, indium-manganese, and indium-chromium alloy films
Measurements have been made of the electronic thermal conductivity of quench-condensed films of lead-manganese and indium-manganese alloys. The results are compared with calculations based on Shiba's theory of superconductors containing magnetic impurities. For Pb-Mn, the value of £ (the normalized …
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Electron tunneling study of superconductors doped with magnetic atoms and nonmagnetic resonant state atoms: Indium-chromium, zinc-manganese, and aluminum-manganese
We have used electron tunneling measurements to determine the density of states of quench-condensed thin films of In-Cr, Zn-Mn, and Al-Mn, and of annealed thin films of Zn-Mn. The results on In-Cr and Zn-Mn were compared with Shiba's theory for magnetic atoms in superconductors. We observed the …
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The effects of chromium and manganese on the superconducting density of states of niobium and vanadium
We have made proximity effect electron tunneling measurements on Nb-Cr, Nb-Mn, V-Cr, and V-Mn films. These films were prepared in an MBE system and in the case of the V films they were grown epitaxialy on sapphire substrates. When the data for Nb are compared to Shiba's theory for magnetic dopants …
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A study of superconducting lead-indium alloys subjected to hydrostatic pressure using the electron tunneling technique
… energy gap were also determined.</p> <p>Electron tunneling measurements on Al-Al<sub>2</sub>0<sub>3</sub>—PbIn junctions were made at normal pressures and at various pressures ranging up to approximately 36OO bar. The tunneling measurements rely on the fact that an electron, in tunneling through a …
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Light scattering studies of phonon anomalies and superconductivity in A15 compounds
… dependence of the Eg phonon linewidth. Raman measurements on p-irradiated V3Si reveal a disorder induced one-phonon density of states (DOS) spectrum for which the overall features and peak positions are in good agreement with the phonon DOS as determined by neutron scattering. The data suggest …
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An analysis of exciton transport, electron tunneling, and electromigration in nanotube and nanowire systems
… - electromigration in metal nanowires, electron tunneling in single-molecules, and carbon nanotube photovoltaics - are investigated. In the first area, electromigrative failure of metal nanowires has been shown to form single-molecule tunnel junctions, but the process has remained unpredictable, …
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Planar Tunneling and Andreev Bound State Spectroscopy of YBa2Cu3O7- d Thin Films Using Solution-Deposited Zirconia Insulators
Planar tunnel spectroscopic measurements are performed on YBa2Cu3O7-δ (YBCO) thin films at four different crystallographic orientations. Since tunneling is a highly surface-sensitive probe on YBCO, films have been optimized for high surface quality. To fabricate the tunneling insulator, a novel …
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Engineering superconductivity in ballistic semiconductor nanowires
… possess a BCS-like superconducting gap in tunneling measurements and demonstrate ballistic 1D superconductivity and near-perfect transmission of supercurrents in the single mode regime, requisites for engineering and controlling 1D topological superconductivity. Additionally, we demonstrate …