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The effect of electrostatic gating on metallic elemental superconductors was recently demonstrated in terms of modulation of the switching current and control of the current phase relation in superconducting quantum interferometers. The…

Superconductivity · Physics 2021-10-28 Claudio Puglia , Giorgio De Simoni , Francesco Giazotto

We report on the fabrication and electrical transport properties of gate-tunable superconducting quantum interference devices (SQUIDs), made of semiconducting PbS nanowire contacted with PbIn superconducting electrodes. Applied with a…

Mesoscale and Nanoscale Physics · Physics 2016-01-08 Hong-Seok Kim , Bum-Kyu Kim , Yiming Yang , Xingyue Peng , Soon-Gul Lee , Dong Yu , Yong-Joo Doh

The phase and thermal driven transport properties of the T-shaped uncorrelated double quantum dot Josephson junction are analyzed by using Keldysh non-equilibrium Green's function equation of motion technique. In this setup, we have shown…

Mesoscale and Nanoscale Physics · Physics 2023-03-10 Bhupendra Kumar , Sachin Verma , Ajay

Under disturbances, superconductors may experience sudden, most undesirable phase transitions (quench) from superconducting to normal conducting state. Quench may lead to damage or even to catastrophic conductor failure. A superconductor is…

Superconductivity · Physics 2022-07-13 Harald Reiss

Despite metals are believed to be insensitive to field-effect and conventional Bardeen-Cooper-Schrieffer (BCS) theories predict the electric field to be ineffective on conventional superconductors, a number of gating experiments showed the…

Mesoscale and Nanoscale Physics · Physics 2020-01-08 Federico Paolucci , Giorgio De Simoni , Paolo Solinas , Elia Strambini , Claudio Puglia , Nadia Ligato , Francesco Giazotto

The recent experimental demonstration of spin-polarized supercurrents offer a venue for establishment of a superconducting analogue to conventional spintronics. Whereas domain wall motion in purely magnetic structures is a well-studied…

Superconductivity · Physics 2015-06-18 Jacob Linder , Klaus Halterman

The smaller the system, typically - the higher is the impact of fluctuations. In narrow superconducting wires sufficiently close to the critical temperature Tc thermal fluctuations are responsible for the experimentally observable finite…

Superconductivity · Physics 2012-05-25 K. Yu. Arutyunov , T. T. Hongisto , J. S. Lehtinen , L. I. Leino , A. L. Vasiliev

Superconducting field-effect transitor (SuFET) and Josephson field-effect transistor (JoFET) technologies take advantage of electric field induced control of charge carrier concentration in order to modulate the channel superconducting…

Mesoscale and Nanoscale Physics · Physics 2019-02-21 Federico Paolucci , Giorgio De Simoni , Elia Strambini , Paolo Solinas , Francesco Giazotto

Heat management and refrigeration are key concepts for nanoscale devices operating at cryogenic temperatures. The design of an on-chip mesoscopic refrigerator that works thanks to the input heat is presented, thus realizing a solid state…

Mesoscale and Nanoscale Physics · Physics 2018-12-18 Giampiero Marchegiani , Pauli Virtanen , Francesco Giazotto

In several unconventional superconductors, the highest superconducting transition temperature $T_{c}$ is found in a region of the phase diagram where the antiferromagnetic transition temperature extrapolates to zero, signaling a putative…

Superconductivity · Physics 2017-05-31 Xiaoyu Wang , Yoni Schattner , Erez Berg , Rafael M. Fernandes

Quantum dots are useful model systems for studying quantum thermoelectric behavior because of their highly energy-dependent electron transport properties, which are tunable by electrostatic gating. As a result of this strong energy…

Mesoscale and Nanoscale Physics · Physics 2016-06-17 Artis Svilans , Adam M. Burke , Sofia Fahlvik Svensson , Martin Leijnse , Heiner Linke

Quantum technology promises revolutionizing applications in information processing, communications, sensing, and modelling. However, efficient on-demand cooling of the functional quantum degrees of freedom remains a major challenge in many…

Mesoscale and Nanoscale Physics · Physics 2018-06-13 Kuan Yen Tan , Matti Partanen , Russell E. Lake , Joonas Govenius , Shumpei Masuda , Mikko Möttönen

Superconducting-proximity topological insulators (STIs) have garnered significant research attention over the past two decades. In this Letter, we demonstrate that a low-dimensional STI in the topological-nontrivial phase (TP) exhibits an…

Superconductivity · Physics 2024-09-02 Yajiang Chen , Ke-Ji Chen , Jia-Ji Zhu , A. A. Shanenko

Three-dimensional topological insulators (TI's) in proximity with superconductors are expected to exhibit exotic phenomena such as topological superconductivity (TSC) and Majorana bound states (MBS), which may have applications in…

We present a theory for quasiparticle heat transport through superconducting weak links. The thermal conductance depends on the phase difference ($\phi$) of the superconducting leads. Branch conversion processes, low-energy Andreev bound…

Superconductivity · Physics 2007-05-23 Erhai Zhao , Tomas Lofwander , J. A. Sauls

A model system consisting of a mesoscopic superconducting grain coupled by Josephson junctions to two macroscopic superconducting electrodes is studied. We focus on the effects of ohmic dissipation caused by resistive shunts and…

Superconductivity · Physics 2009-11-10 Gil Refael , Eugene Demler , Yuval Oreg , Daniel S. Fisher

Fast cryogenic switches with ultra-low power dissipation are highly sought-after for control electronics of quantum computers, space applications and next generation logic circuits. However, existing high-frequency switches are often bulky,…

Superconductivity · Physics 2021-06-08 M. F. Ritter , A. Fuhrer , D. Z. Haxell , S. Hart , P. Gumann , H. Riel , F. Nichele

Superconductivity can be understood in terms of a phase transition from an uncorrelated electron gas to a condensate of Cooper pairs in which the relative phases of the constituent electrons are coherent over macroscopic length scales. The…

Superconductivity · Physics 2018-01-03 Alberto Ronzani , Carles Altimiras , Sophie D'Ambrosio , Pauli Virtanen , Francesco Giazotto

We have performed the first experiments in a superconductor - normal metal - superconductor single electron transistor in which there is an extra superconducting strip partially overlapping the normal metal island in good metal-to-metal…

Superconductivity · Physics 2009-10-31 A. J. Manninen , R. S. Poikolainen , T. V. Ryynanen , J. P. Pekola

Efficient heat dissipation to the substrate is crucial for optimal device performance in nanoelectronics. We develop a theory of electronic thermal boundary conductance (TBC) mediated by remote phonon scattering for the single-layer…

Mesoscale and Nanoscale Physics · Physics 2020-09-28 Zhun-Yong Ong , Gang Zhang , Linyou Cao , Yong-Wei Zhang
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