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相关论文: Nonlocal thermoelectric engines in hybrid topologi…

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We discuss the phase dependent nonlocal thermoelectric effect in a topological Josephson junction in contact with a normal-metal probe. We show that, due to the helical nature of topological edge states, nonlocal thermoelectricity is…

介观与纳米尺度物理 · 物理学 2021-01-04 Gianmichele Blasi , Fabio Taddei , Liliana Arrachea , Matteo Carrega , Alessandro Braggio

Hybrid Josephson junctions realized on a two-dimensional electron gas are considered promising candidates for developing topological elements that are easily controllable and scalable. Here, we theoretically study the possibility of the…

介观与纳米尺度物理 · 物理学 2023-11-28 D. Kuiri , M. P. Nowak

We consider a Josephson junction hosting a Kramers pair of helical edge states of a quantum spin Hall bar in contact with a normal-metal probe. In this hybrid system, the orbital phase induced by a small magnetic field threading the…

介观与纳米尺度物理 · 物理学 2020-06-04 Gianmichele Blasi , Fabio Taddei , Liliana Arrachea , Matteo Carrega , Alessandro Braggio

Thermoelectric effects in metals are typically small due to the nearly-perfect particle-hole (PH) symmetry around their Fermi surface [1, 2]. Despite being initially considered paradoxical [3], thermophase effects [4-8] and linear…

介观与纳米尺度物理 · 物理学 2025-01-27 Gaia Germanese , Federico Paolucci , Giampiero Marchegiani , Alessandro Braggio , Francesco Giazotto

In a previous work, we predicted that a thermally biased tunnel junction between two different superconductors can display a thermoelectric effect of nonlinear nature in the temperature gradient, under proper conditions. In this work we…

介观与纳米尺度物理 · 物理学 2020-06-11 G. Marchegiani , A. Braggio , F. Giazotto

We theoretically explore the behavior of thermal transport in the topological SQUIPT, in the linear and nonlinear regime. The device consists of a topological Josephson junction based on a two-dimensional topological insulator in contact…

We investigate the noise current in a thermally biased tunnel junction between two superconductors with different zero-temperature gaps. When the Josephson effect is suppressed, this structure can support a nonlinear thermoelectric effect…

介观与纳米尺度物理 · 物理学 2020-11-26 G. Marchegiani , A. Braggio , F. Giazotto

Not so long ago, thermoelectricity in superconductors was believed to be possible only by breaking explicitly the particle-hole symmetry. Recently, it has been theoretically predicted that a superconducting tunnel junction can develop…

We investigate nonequilibrium effects in the transport of interacting electrons in quantum conductors, proposing the nonlocal thermoelectric response as a direct indicator of the presence of interactions, nonthermal states and the effect of…

介观与纳米尺度物理 · 物理学 2024-05-10 Alessandro Braggio , Matteo Carrega , Björn Sothmann , Rafael Sánchez

In the linear regime, thermo-electric effects between two conductors are possible only in the presence of an explicit breaking of the electron-hole symmetry. We consider a tunnel junction between two electrodes and show that this condition…

介观与纳米尺度物理 · 物理学 2020-03-17 G. Marchegiani , A. Braggio , F. Giazotto

We study the thermodynamic properties of a superconductor/normal metal/superconductor Josephson junction {in the short limit}. Owing to the proximity effect, such a junction constitutes a thermodynamic system where {phase difference},…

We investigate the thermoelectric response of a coherent conductor in contact with a scanning probe. Coupling to the probe has the dual effect of allowing for the controlled local injection of heat currents into the system and of inducing…

介观与纳米尺度物理 · 物理学 2022-06-06 Rafael Sánchez , Cosimo Gorini , Geneviève Fleury

We develop a detailed theory describing a non-trivial interplay between non-equilibrium effects and long-range quantum coherence in superconducting hybrid nanostructures exposed to a temperature gradient. We establish a direct relation…

超导电性 · 物理学 2021-04-05 Mikhail S. Kalenkov , Andrei D. Zaikin

Thermoelectric effects result from the coupling of charge and heat transport, and can be used for thermometry, cooling and harvesting of thermal energy. The microscopic origin of thermoelectric effects is a broken electron-hole symmetry,…

超导电性 · 物理学 2016-04-08 S. Kolenda , P. Machon , D. Beckmann , W. Belzig

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…

介观与纳米尺度物理 · 物理学 2023-03-10 Bhupendra Kumar , Sachin Verma , Ajay

We propose theoretically a thermal switch operating by the magnetic-flux controlled diffraction of phase-coherent heat currents in a thermally biased Josephson junction based on a two-dimensional topological insulator. For short junctions,…

介观与纳米尺度物理 · 物理学 2017-03-02 Björn Sothmann , Francesco Giazotto , Ewelina M. Hankiewicz

Superconducting tunnel junctions constitute the units of superconducting quantum circuits and are massively used both for quantum sensing and quantum computation. In previous works, we predicted the existence of a nonlinear thermoelectric…

介观与纳米尺度物理 · 物理学 2020-10-21 G. Marchegiani , A. Braggio , F. Giazotto

In an in-situ prepared three-terminal Josephson junction based on the topological insulator Bi$_4$Te$_3$ and the superconductor Nb the transport properties are studied. The differential resistance maps as a function of two bias currents…

We demonstrate that thermoelectric signal as well as dc Josephson current may be severely enhanced in multi-terminal superconducting hybrid nanostructures exposed to a temperature gradient. At temperatures $T$ strongly exceeding the…

介观与纳米尺度物理 · 物理学 2020-05-13 Mikhail S. Kalenkov , Pavel E. Dolgirev , Andrei D. Zaikin

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…

超导电性 · 物理学 2022-07-20 Claudio Guarcello , Roberta Citro , Francesco Giazotto , Alessandro Braggio
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