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Experiments on the distributions of switching currents in Josephson junctions are sensitive probes of the mechanism by which a junction changes abruptly to a finite voltage state. At low temperatures data exhibit smooth and gradual…

Superconductivity · Physics 2021-08-19 James A. Blackburn

We find that a temperature differential can drive superfluid oscillations in 4He. The oscillations are excited by a heater which causes a time dependent temperature differential across an array of 70nm apertures. By measuring the…

Superconductivity · Physics 2007-05-23 E. Hoskinson , R. E. Packard

We discuss heat transport through a Josephson tunnel junction under various bias conditions. We first derive the formula for the cooling power of the junction valid for arbitrary time dependence of the Josephson phase. Combining it with the…

Mesoscale and Nanoscale Physics · Physics 2013-04-04 Dmitry Golubev , Timothé Faivre , Jukka P. Pekola

We developed microscopic theory of Josephson effect in point contacts between dirty two-band superconductors. The general expression for the Josephson current, which is valid for arbitrary temperatures, is obtained. This expression was used…

Superconductivity · Physics 2011-08-19 Y. S. Yerin , A. N. Omelyanchouk

Inspired by a recent experiment, we study the influence of thermal fluctuations on the $I$-$V$ characteristics of a Josephson junction, coupled to a strongly resistive environment. We obtain analytical results in the limit where the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 I. S. Beloborodov , F. W. J. Hekking , F. Pistolesi

Zero-bias resistances of a single resistance-shunted Josephson junction are calculated as a function of the temperature by means of the path-integral Monte Carlo method in case a charging energy $E_{\rm C}$ is comparable with a Josephson…

Superconductivity · Physics 2009-11-10 Naoki Kimura , Takeo Kato

We theoretically investigate heat transport in temperature-biased 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 flux…

Mesoscale and Nanoscale Physics · Physics 2013-09-12 F. Giazotto , M. J. Martinez-Perez , P. Solinas

We explain why the objections raised by Golubev et al. in a comment on cond-mat/0111398 are not valid.

Statistical Mechanics · Physics 2016-08-31 T. R. Kirkpatrick , D. Belitz

The Josephson current-phase characteristics, that arise when a supercurrent flows across two fermionic superfluids separated by a potential barrier, can be controlled by varying either the inter-particle coupling or the temperature. While…

Superconductivity · Physics 2020-10-21 Verdiana Piselli , Stefano Simonucci , Giancarlo Calvanese Strinati

We investigate, by experiments and numerical simulations, thermal activation processes of Josephson tunnel junctions in the presence of microwave radiation. When the applied signal resonates with the Josephson plasma frequency oscillations,…

Statistical Mechanics · Physics 2007-08-28 N. Grønbech-Jensen , M. G. Castellano , F. Chiarello , M. Cirillo , C. Cosmelli , V. Merlo , R. Russo , G. Torrioli

We study the Josephson effect in D/I/DN/I/D junctions, where I, DN and D denote an insulator, a diffusive normal metal and a d-wave superconductor, respectively.The Josephson current is calculated based on the quasiclassical Green's…

Superconductivity · Physics 2009-11-11 T. Yokoyama , Y. Tanaka , A. A. Golubov , Y. Asano

We calculate the supercurrent through a Josephson junction consisting of a phase-coherent metal particle (quantum dot), weakly coupled to two superconductors. The classical motion in the quantum dot is assumed to be chaotic on time scales…

Mesoscale and Nanoscale Physics · Physics 2008-02-03 P. W. Brouwer , C. W. J. Beenakker

The dc Josephson effect is considered from the thermodynamic point of view. Universal thermodynamic equations, relating both bound and continuum contributions to the Josephson current with the normal electron scattering amplitudes are…

Superconductivity · Physics 2016-08-31 A. Krichevsky , M. Schechter , Y. Imry , Y. Levinson

Josephson tunnel junctions are proposed as efficient phase-tunable thermal rectifiers. The latter exploit the strong temperature dependence of the superconducting density of states and phase-dependence of heat currents flowing through…

Mesoscale and Nanoscale Physics · Physics 2013-05-20 M. J. Martinez-Perez , F. Giazotto

I present arguments favouring linearity of the intrinsic (heating-free) I-V of the `intrinsic' Josephson effect.

Superconductivity · Physics 2007-05-23 V. N. Zavaritsky

Herein I respond to the criticism and to the complains by Benestad (Pattern Recogn. Phys. 1, 91-92, 2013, http://dx.doi.org/10.5194/prp-1-91-2013) of Scafetta (Pattern Recogn. Phys. 1, 37-57, 2013, http://dx.doi.org/10.5194/prp-1-37-2013)…

Geophysics · Physics 2013-09-27 Nicola Scafetta

The first evidence of the dc Josephson effect dates back to 1963 when J. S. Rowell measured the diffraction pattern of the critical current flowing through a single superconducting tunnel junction subjected to an in-plane magnetic field.…

Mesoscale and Nanoscale Physics · Physics 2014-04-04 M. J. Martínez-Pérez , F. Giazotto

We theoretically study the behavior of the critical current of a thermally-biased tunnel Josephson junction with a particular design, in which the electrodes of the junction are enclosed in two different superconducting loops pierced by…

Superconductivity · Physics 2022-07-20 Claudio Guarcello , Roberta Citro , Francesco Giazotto , Alessandro Braggio

The properties of Josephson junction including a ferromagnetic insulating layer are studied theoretically. The calculated current shows the anomalous dependence on the magnitude of the exchange interaction at the interface. The Josephson…

Superconductivity · Physics 2007-05-23 Masashi Yamashiro , Nobukatsu Yoshida , Yukio Tanaka , Satoshi Kashiwaya

We discuss thermal transport through a Josephson junction in a time-dependent situation. We write the spectral representation of the heat current pumped by a generic drive. This enables separation of the dissipative and reactive…

Superconductivity · Physics 2017-04-25 P. Virtanen , P. Solinas , F. Giazotto
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