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Voltage fluctuations generated in a hot resistor can cause extraction of heat from a colder normal metal electrode of a hybrid tunnel junction between a normal metal and a superconductor. We extend the analysis presented in [Phys. Rev.…

介观与纳米尺度物理 · 物理学 2015-05-28 J. T. Peltonen , M. Helle , A. V. Timofeev , P. Solinas , F. W. J. Hekking , J. P. Pekola

We investigate fluctuations of electric and heat currents, along with their cross-correlations, in a two-channel charge Kondo circuit driven by either a voltage bias or a temperature gradient applied across the weak link. The ratios of…

介观与纳米尺度物理 · 物理学 2026-04-22 T. K. T. Nguyen , J. Rech , T. Martin , M. N. Kiselev

We uncover that the competition between electron-electron correlations and electron-phonon interactions gives rise to unexpectedly huge enhancement of the superconducting transition temperature, several hundreds percent larger ($\geq$ 200…

超导电性 · 物理学 2013-07-24 Rayda Gammag , Ki-Seok Kim

Spin dependent transport in a ferromagnet/superconductor/ferromagnet single electron transistor is studied theoretically with spin accumulation, spin relaxation, gap suppression, and charging effects taken into account. A strong dependence…

介观与纳米尺度物理 · 物理学 2009-11-10 J. Johansson , V. Korenivski , D. B. Haviland , A. Brataas

We analyze the heat current traversing a quantum dot sandwiched between a ferromagnetic and a superconducting electrode. The heat flow generated in response to a voltage bias presents rectification as a function of the gate potential…

介观与纳米尺度物理 · 物理学 2018-04-24 Sun-Yong Hwang , David Sanchez

We theoretically investigate quantum fluctuation of charge between even and odd states of a normal-superconducting-normal single-electron tunneling transistor. It is shown that due to the superconducting gap, the charge fluctuation in the…

介观与纳米尺度物理 · 物理学 2009-11-07 Yasuhiro Utsumi , Hiroshi Imamura , Masahiko Hayashi , Hiromichi Ebisawa

Electron transport between two superconductors through an Anderson impurity in the Kondo regime is investigated within the slave boson mean field approximation. The current, shot noise power and Fano factor are displayed versus the applied…

强关联电子 · 物理学 2007-05-23 Y. Avishai , A. Golub , A. D. Zaikin

We present a qualitative model study of energy and temperature dependence of hot electron magnetotransport. This model calculations are based on a simple argument that the inelastic scattering strength of hot electrons is strongly spin and…

凝聚态物理 · 物理学 2009-11-07 Jisang Hong

Quantum heat transfer through a generic superconducting set-up consisting of a tunable transmon qubit placed between resonators that are termined by thermal reservoirs is explored. Two types of architectures are considered, a sequential and…

量子物理 · 物理学 2021-03-24 Meng Xu , J. T. Stockburger , J. Ankerhold

We demonstrate that the conductance through a single-electron transistor at low temperature is in quantitative agreement with predictions of the equilibrium Anderson model. When an unpaired electron is localized within the transistor, the…

介观与纳米尺度物理 · 物理学 2009-10-31 D. Goldhaber-Gordon , J. Goeres , M. A. Kastner , Hadas Shtrikman , D. Mahalu , U. Meirav

We investigate the properties of a hybrid single electron transistor, involving a small superconducting island sandwiched between normal metal leads, which is driven by dc plus ac voltages. In order to describe its properties we derive from…

We report Kondo resonances in the conduction of single-molecule transistors based on transition metal coordination complexes. We find Kondo temperatures in excess of 50 K, comparable to those in purely metallic systems. The observed gate…

介观与纳米尺度物理 · 物理学 2007-05-23 L. H. Yu , Z. K. Keane , J. W. Ciszek , L. Cheng , J. M. Tour , T. Baruah , M. R. Pederson , D. Natelson

Thermoelectric transport of two-dimensional quantum spin Hall systems are theoretically studied in narrow ribbon geometry. We find that at high temperature electrons in the bulk states dominate. By lowering temperature, the "perfectly…

介观与纳米尺度物理 · 物理学 2010-04-12 Ryuji Takahashi , Shuichi Murakami

We develop a method of theoretically investigating the charge, energy and heat transport in the presence of the charge Kondo correlations. The Coulomb blockade oscillations of heat conductance in the single electron transistor exhibiting…

介观与纳米尺度物理 · 物理学 2021-01-01 D. B. Karki

Understanding how the mechanism of charge transport through molecular tunnel junctions depends on temperature is crucial to control electronic function in molecular electronic devices. With just a few systems investigated as a function of…

介观与纳米尺度物理 · 物理学 2016-05-27 Alvar R. Garrigues , Lejia Wang , Enrique del Barco , Christian A. Nijhuis

The realization of single-molecule thermal conductance measurements has driven the need for theoretical tools to describe conduction processes that occur over atomistic length scales. In macroscale systems, the principle that is typically…

介观与纳米尺度物理 · 物理学 2023-05-17 Galen T. Craven , Abraham Nitzan

In the present work we theoretically study thermoelectric transport and heat transfer in a junction including a $T$-shaped double quantum dot coupled to nonmagnetic electrodes and supplemented with a third dot in a parallel configuration.…

介观与纳米尺度物理 · 物理学 2022-07-27 Natalya A. Zimbovskaya

Optimal single electron sources emit regular streams of particles, displaying no low frequency charge current noise. Due to the wavepacket nature of the emitted particles, the energy is however fluctuating, giving rise to heat current…

介观与纳米尺度物理 · 物理学 2013-03-25 F. Battista , M. Moskalets , M. Albert , P. Samuelsson

We show that nonequilibrium spin fluctuations significantly influence the electronic transport in a single-electron transistor, when the spin relaxation on the island is slow compared to other relaxation processes, and when size effects…

介观与纳米尺度物理 · 物理学 2016-08-16 Jan Martinek , Józef Barnas , Gerd Schön , Saburo Takahashi , Sadamichi Maekawa

We study quantum transport through two-terminal nanoscale devices in contact with two particle reservoirs at different temperatures and chemical potentials. We discuss the general expressions controlling the electric charge current, heat…

介观与纳米尺度物理 · 物理学 2017-08-04 G. Bevilacqua , G. Grosso , G. Menichetti , G. Pastori Parravicini