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Low-temperature (down to $\sim$ 50 mK) thermal conductivity measurements with the heat flow direction along the inter-plane tetragonal $c$-axis, $\kappa_c$, were used to study the superconducting state of heavy fermion CeIrIn$_5$.…

Superconductivity · Physics 2022-04-14 H. Shakeripour , M. A. Tanatar , C. Petrovic , Louis Taillefer , Louis Taillefer

We calculate the thermodynamic properties of a collection of $N$ small Josephson junctions coupled to a single-mode resonant electromagnetic cavity, at finite temperature $T$, using several approaches. In the first approach, we include all…

Superconductivity · Physics 2009-11-13 Kohjiro Kobayashi , David Stroud

Tunnel junction between two superconductors is considered in the vicinity of the critical temperature. Superconductive fluctuations above Tc give rise to the noise of the ac Josephson current although the current itself is zero in average.…

Superconductivity · Physics 2009-11-13 Alex Levchenko

We investigate the zero-bias behavior of Josephson junctions made of encapsulated graphene boron nitride heterostructures in the long ballistic junction regime. For temperatures down to 2.7K, the junctions appear non-hysteretic with respect…

Mesoscale and Nanoscale Physics · Physics 2021-01-01 J. Tang , M. T. Wei , A. Sharma , E. G. Arnault , A. Seredinski , Y. Mehta , K. Watanabe , T. Taniguchi , F. Amet , I. Borzenets

A superconductor-normal metal-superconductor mesoscopic Josephson junction has been realized in which the critical current is tuned through normal current injection using a symmetric electron cooler directly connected to the weak link. Both…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. M. Savin , J. P. Pekola , J. T. Flyktman , A. Anthore , F. Giazotto

With this study we analyze the fluctuations of an electronic only heat current across a molecular wire. The wire is composed of a single energy level which connects to two leads which are held at different temperatures. By use of the Green…

Mesoscale and Nanoscale Physics · Physics 2011-11-24 Fei Zhan , Sergey Denisov , Peter Hanggi

As power electronics shrinks down to sub-micron scale, the thermal transport from a solid surface to environment becomes significant. Under circumstances when the device works in rare gas environment, the scale for thermal transport is…

Applied Physics · Physics 2018-05-23 Jianshu Gao , Yanan Yue , Danmei Xie , Yangheng Xiong

Thermal convection stands out as an exceptionally efficient thermal transport mechanism, distinctly separate from conduction and radiation. Yet, the inherently elusive nature of fluid motion poses challenges in accurately controlling…

Applied Physics · Physics 2023-09-26 Peng Jin , Gaole Dai , Fubao Yang

Phase- and voltage bias-sensitive quasiparticle transport at a double $NIS_1IS_2$ interface is considered. The barriers $I$ range from tunnel to transparent, and the intermediate region $S_1$ has a width comparable to the superconducting…

Mesoscale and Nanoscale Physics · Physics 2014-04-16 David Gosselin , Gaston Hornecker , Régis Mélin , Denis Feinberg

We discuss electric transport through a point contact which bridges Majorana fermion modes appearing at edges of two helical superconductors. The contents focus on effects of interference and interaction unique to the Majorana fermions and…

Superconductivity · Physics 2010-08-05 Yasuhiro Asano , Yukio Tanaka , Naoto Nagaosa

We study photonic heat conduction between two resistors coupled weakly to a single superconducting microwave cavity. At low enough temperature, the dominating part of the heat exchanged between the resistors is transmitted by single-photon…

Quantum Physics · Physics 2015-05-28 P. J. Jones , J. A. M. Huhtamäki , K. Y. Tan , M. Möttönen

We consider microscopically low-temperature transport in weakly disordered arrays of Josephson junctions in the Coulomb blockade regime. We demonstrate that at sufficiently low temperatures the main contribution to the dc conductivity comes…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 S. V. Syzranov , K. B. Efetov , B. L. Altshuler

Thermal activation and macroscopic quantum tunneling in current-biased discrete Josephson transmission lines are studied theoretically. The degrees of freedom under consideration are the phases across the junctions which are coupled to each…

Superconductivity · Physics 2009-10-31 Thorsten Droese , Cristiane Morais-Smith

In this paper, a dc Josephson junction between two singlet superconductors (d-wave and s-wave) with arbitrary reflection coefficient has been investigated theoretically following the famous paper [ Y. Tanaka and S. Kashiwaya 1996…

Superconductivity · Physics 2009-11-13 Gholamreza Rashedi

Producing a large current typically requires large dissipation, as is the case in electric conduction, where Joule heating is proportional to the square of the current. Stochastic thermodynamics offers a framework to study nonequilibrium…

Quantum Physics · Physics 2021-11-17 Hiroyasu Tajima , Ken Funo

The thermoelectric transport through a molecular bridge is discussed, with an emphasis on the effects of inelastic processes of the transport electrons caused by the coupling to the vibrational modes of the molecule. In particular it is…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 O. Entin-Wohlman , Y. Imry , A. Aharony

The superconducting-insulator transition is simulated in disordered networks of Josephson junctions with thermally activated Arrhenius-like resistive shunt. By solving the conductance matrix of the network, the transition is reproduced in…

Superconductivity · Physics 2013-04-09 Linda Ponta , Valentina Andreoli , Anna Carbone

We study the Josephson current, I_J, in a junction consisting of two s-wave superconductors that are separated by a ferromagnetic barrier possessing a magnetic and non-magnetic scattering potential, g and Z, respectively. We discuss the…

Superconductivity · Physics 2009-05-12 Boris Kastening , Dirk K. Morr , Lambert Alff , Karl Bennemann

Thermal and charge transport in the diffusive normal metal(DN) / insulator / $s$-, $d$- and p-wave superconductor junctions are studied for various situations, where we have used the Usadel equation with Nazarov's generalized boundary…

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

The optical properties of single crystals of YBa_2Cu_3O_{6+x} have been examined along the c axis above and below the critical temperature (T_c) for a wide range of oxygen dopings. The temperature dependence of the optically-determined…

Superconductivity · Physics 2007-05-23 C. C. Homes , S. V. Dordevic , D. A. Bonn , R. Liang , W. N. Hardy , T. Timusk
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