Results 41 to 50 of about 69,087 (236)

Spontaneous fluxon formation in annular Josephson tunnel junctions [PDF]

Physical Review B, 2003
It has been argued by Zurek and Kibble that the likelihood of producing defects in a continuous phase transition depends in a characteristic way on the quench rate. In this paper we discuss our experiment for measuring the Zurek-Kibble scaling exponent sigma for the production of fluxons in annular symmetric Josephson Tunnel Junctions.
R Monaco, J Mygind, RJ Rivers
openaire   +3 more sources

Superconducting Sub-Terahertz Oscillator with Continuous Frequency Tuning

Applied Sciences, 2022
The development and approbation of a superconducting local oscillator based on a long Josephson junction made it possible to create a fully superconducting integrated receiver in sub-terahertz frequency range, which was successfully tested both on board ...
Maxim E. Paramonov, Lyudmila V. Filippenko, Fedor V. Khan, Oleg S. Kiselev, Valery P. Koshelets   +4 more
doaj   +1 more source

High transparency Bi2Se3 topological insulator nanoribbon Josephson junctions with low resistive noise properties [PDF]

Applied Physics Letters, 2019
Bi$_2$Se$_3$ nanoribbons, grown by catalyst-free Physical Vapour Deposition, have been used to fabricate high quality Josephson junctions with Al superconducting electrodes.
G. Kunakova, T. Bauch, E. Trabaldo, J. Andzane, D. Erts, F. Lombardi   +5 more
semanticscholar   +1 more source

Josephson tunnel junctions with a strong ferromagnetic interlayer [PDF]

Physical Review B, 2009
The dependence of the critical current density j_c on the ferromagnetic interlayer thickness d_F was determined for Nb/Al_2O_3/Cu/Ni/Nb Josephson tunnel junctions with ferromagnetic \Ni interlayer from very thin film thicknesses (\sim 1 nm) upwards and classified into F-layer thickness regimes showing a dead magnetic layer, exchange, exchange ...
Bannykh, A. A., Pfeiffer, J., Solyarov, V.S., Batov, I. E., Ryazanov, V. V., Weides, M.   +5 more
openaire   +3 more sources

Quasiparticle tunneling as a probe of Josephson junction barrier and capacitor material in superconducting qubits

npj Quantum Information, 2022
Non-equilibrium quasiparticles are possible sources for decoherence in superconducting qubits because they can lead to energy decay or dephasing upon tunneling across Josephson junctions (JJs).
C. Kurter, C. E. Murray, R. T. Gordon, B. B. Wymore, M. Sandberg, R. M. Shelby, A. Eddins, V. P. Adiga, A. D. K. Finck, E. Rivera, A. A. Stabile, B. Trimm, B. Wacaser, K. Balakrishnan, A. Pyzyna, J. Sleight, M. Steffen, K. Rodbell   +17 more
doaj   +1 more source

The two Josephson junction flux qubit with large tunneling amplitude [PDF]

, 2008
In this paper we discuss solid-state nanoelectronic realizations of Josephson flux qubits with large tunneling amplitude between the two macroscopic states.
A. A. Soroka, S. I. Melnyk, Shnyrkov V. I., V. I. Shnyrkov, Wendin G.   +4 more
core   +2 more sources

Structural and nanochemical properties of AlOx layers in Al/AlOx/Al -layer systems for Josephson junctions [PDF]

PHYSICAL REVIEW MATERIALS, 2019
The structural and nanochemical properties of thin $AlO_x$ layers are decisive for the performance of advanced electronic devices. For example, they are frequently used as tunnel barriers in Josephson junction-based superconducting devices.
S. Fritz, L. Radtke, R. Schneider, M. Luysberg, M. Weides, D. Gerthsen   +5 more
semanticscholar   +1 more source

Properties of Ferromagnetic Josephson Junctions for Memory Applications [PDF]

IEEE transactions on applied superconductivity, 2018
In this paper, we give a characterization of the RF effect of memory switching on Nb-Al/AlO $_x$–(Nb)–Pd $_{0.99}$Fe$_{0.01}$ –Nb Josephson junctions as a function of magnetic field pulse amplitude and duration, alongside with an electrodynamical ...
R. Caruso, D. Massarotti, A. Miano, V. V. Bolginov, A. B. Hamida, L. Karelina, G. Campagnano, Igor V. Vernik, F. Tafuri, V. Ryazanov, O. Mukhanov, G. Pepe   +11 more
semanticscholar   +1 more source

Quantum Uncertainty and Energy Flux in Extended Electrodynamics

Quantum Reports, 2021
In quantum theory, for a system with macroscopic wavefunction, the charge density and current density are represented by non-commuting operators. It follows that the anomaly I=∂tρ+∇·j, being essentially a linear combination of these two operators in the ...
Fernando Minotti, Giovanni Modanese
doaj   +1 more source

Electron tunneling properties of Al2O3 tunnel barrier made using atomic layer deposition in multilayer devices

AIP Advances, 2019
As metal/insulator/metal tunnel junctions (MIMTJs), such as magnetic tunnel junctions and Josephson tunnel junctions, push the insulating tunnel barrier (TB) towards the ultrathin regime (
Ryan Goul, Jamie Wilt, Jagaran Acharya, Bo Liu, Dan Ewing, Matthew Casper, Alex Stramel, Alan Elliot, Judy Z. Wu   +8 more
doaj   +1 more source