Results 21 to 30 of about 7,124 (268)

Field-induced superconducting phase in superconductor–normal metal and superconductor-superconductor bilayers [PDF]

open access: yesPhysical Review B, 2011
We study the proximity effect in a superconductor (S)-normal metal (N) bilayer under in-plane magnetic field. A compensation between the Zeeman effect and the energy splitting between bonding and anti-bonding levels leads to a magnetic field induced superconducting phase in the (H,T) phase diagram of the S-N bilayer well above the standard paramagnetic
Montiel, Xavier, Buzdin, Alexandre I.
openaire   +2 more sources

A controllable superconducting electromechanical oscillator with a suspended membrane

open access: yesAIP Advances, 2019
We fabricate a microscale electromechanical system, in which a suspended superconducting membrane, treated as a mechanical oscillator, capacitively couples to a superconducting microwave resonator.
Yong-Chao Li   +12 more
doaj   +1 more source

Adiabatic Pumping in a Superconductor-Normal-Superconductor Weak Link [PDF]

open access: yesPhysical Review Letters, 2005
We present a formalism to study adiabatic pumping through a superconductor - normal - superconductor weak link. At zero temperature, the pumped charge is related to the Berry phase accumulated, in a pumping cycle, by the Andreev bound states. We analyze in detail the case when the normal region is short compared to the superconducting coherence length.
Fazio Rosario   +3 more
openaire   +4 more sources

A study of thermal effects in superconducting terahertz modulator by low temperature scanning laser microscope

open access: yesAIP Advances, 2018
We use low temperature scanning laser microscope (LTSLM) to study the Joule power distribution of superconducting (SC) terahertz (THz) modulator. The LTSLM scanning images record the SC state transformation process under different DC bias voltages.
Chao Han   +7 more
doaj   +1 more source

Tunable and high quality factor Fano and toroidal dipole resonances in terahertz superconducting metamaterials

open access: yesMaterials Research Express, 2020
We experimentally studied a series of terahertz (THz) metamaterials with asymmetric resonator structures made from superconducting niobium nitride or gold films.
Siyu Duan   +11 more
doaj   +1 more source

Superconducting diode effect via conformal-mapped nanoholes

open access: yesNature Communications, 2021
A superconducting diode is dissipationless and desirable for electronic circuits with ultralow power consumption, yet it remains challenging to realize it. Here, the authors achieve a superconducting diode in a conventional superconducting film patterned
Yang-Yang Lyu   +12 more
doaj   +1 more source

Superconductor Meissner Effects for Gravito-Electromagnetic Fields in Harmonic Coordinates Due to Non-Relativistic Gravitational Sources

open access: yesFrontiers in Physics, 2022
There is much discrepancy in the literature concerning the possibility of a superconductor expelling gravito-electromagnetic fields just as it expels electromagnetic fields in the Meissner effect.
Nader A. Inan   +2 more
doaj   +1 more source

π-0 transition in superconductor-ferromagnet-superconductor junctions [PDF]

open access: yesJournal of Experimental and Theoretical Physics Letters, 2001
Superconductor-Ferromagnetic-Superconductor (SFS) Josephson junctions are known to exhibit a transition between $π$ and 0 states. In this note we find the $π-0$ phase diagram of an SFS junction depending on the transparency of an intermediate insulating layer (I).
Chtchelkatchev, N. M.   +3 more
openaire   +4 more sources

Achieving GHz system detection rate of photons in highly uniform responding superconducting nanowires coupled with multimode fiber [PDF]

open access: yesAPL Photonics
Single-photon detectors with high detection rates are the foundation for the high-speed remote laser communication. Although a total detection rate of gigahertz has been achieved with multiple superconducting nanowires, the coupled single-mode fibers are
Jingrou Tan   +11 more
doaj   +1 more source

Feedback effects in superconductors [PDF]

open access: yesPhysical Review B, 1994
We calculate corrections to the BCS gap equation caused by the interaction of electrons with the collective phase and amplitude modes in the superconducting state. This feedback reduces the BCS gap parameter, $Δ$, and leaves the critical temperature, $T_c$, unchanged.
Gherghetta, Tony, Nambu, Yoichiro
openaire   +3 more sources

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