Results 61 to 70 of about 69,087 (236)

Measurements of dichroic bow-tie antenna arrays with integrated cold-electron bolometers using YBCO oscillators. [PDF]

open access: yesBeilstein J Nanotechnol
We consider properties of dichroic antenna arrays on a silicon substrate with integrated cold-electron bolometers to detect radiation at frequencies of 210 and 240 GHz.
Revin LS   +15 more
europepmc   +2 more sources

Josephson current carried by Andreev levels in superconducting quantum point contacts

open access: yes, 1998
The dc Josephson effect in a superconducting quantum point contact, where supercurrent flows through a small number of channels, is reviewd. The central role of Andreev levels is emphasized which carry the whole supercurrent in short symmetric Josephson ...
Abrikosov   +46 more
core   +1 more source

Fluctuation Dominated Josephson Tunneling with a Scanning Tunneling Microscope [PDF]

open access: yes, 2001
We demonstrate Josephson tunneling in vacuum tunnel junctions formed between a superconducting scanning tunneling microscope tip and a Pb film, for junction resistances in the range 50-300 k$\Omega$.
C. J. Muller   +25 more
core   +1 more source

Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications

open access: yesAdvanced Materials, EarlyView.
This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li   +6 more
wiley   +1 more source

Tunable Josephson Generator for Qubit Excitation and Two‐Tone Spectroscopy

open access: yesAdvanced Quantum Technologies, EarlyView.
A tunable on‐chip Josephson generator that enables direct qubit excitation has been presented. The device consists of a current‐biased Josephson junction and a superconducting resonator, forming a microwave source that operates at 4 K. Excitation of the qubit at 20 mK was done via a short coaxial line between the 4 K and 20 mK stages.
M. M. Khrenov   +17 more
wiley   +1 more source

High resolution measurements of the switching current in a Josephson tunnel junction: Thermal activation and macroscopic quantum tunneling

open access: yes, 2002
We have developed a scheme for a high resolution measurement of the switching current distribution of a current biased Josephson tunnel junction using a timing technique.
A. Kemp   +14 more
core   +1 more source

Coherent diffraction of thermal currents in long Josephson tunnel junctions [PDF]

open access: yes, 2013
We discuss heat transport in thermally-biased long Josephson tunnel junctions in the presence of an in-plane magnetic field. In full analogy with the Josephson critical current, the phase-dependent component of the heat current through the junction ...
F. Giazotto   +2 more
semanticscholar   +1 more source

Passive On-Chip Superconducting Circulator Using a Ring of Tunnel Junctions. [PDF]

open access: yesPhysical Review Letters, 2017
We present the design of a passive, on-chip microwave circulator based on a ring of superconducting tunnel junctions. We investigate two distinct physical realizations, based on Josephson junctions (JJs) or quantum phase slip elements (QPS), with ...
C. Müller   +4 more
semanticscholar   +1 more source

Engineering Grain Architecture in Epitaxial Aluminum on Miscut Substrates Toward Various Clean Limits and Giant Superconductivity Modulation

open access: yesSmall, EarlyView.
The miscut substrate strategy offers a novel means to engineer aluminum surface roughness, grain architecture, crystallinity, and both normal and superconducting transport properties toward their clean limits by precisely tuning the miscut angle without altering growth conditions.
Thi‐Hien Do   +13 more
wiley   +1 more source

Maximum supercurrent in Josephson junctions with alternating critical current density

open access: yes, 2007
We consider theoretically and numerically magnetic field dependencies of the maximum supercurrent across Josephson tunnel junctions with spatially alternating critical current density.
A. Barone   +9 more
core   +1 more source

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