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An asymmetry as a function of the direction of current flow is observed in the current-voltage characteristic (CVC) and its first and second derivatives for point heterocontacts between pure metals {Cu, Ni, Fe) as well as between these…

介观与纳米尺度物理 · 物理学 2013-06-19 Yu. G. Naidyuk , N. N. Gribov , O. I. Shklyarevskii , A. G. M. Jansen , I. K. Yanson

We investigate the coupling of spin and thermal currents as a means to rise the thermoelectric efficiency of nanoscale graphene devices. We consider nanostructures composed of overlapping graphene nanoribbons with ferromagnetic contacts in…

介观与纳米尺度物理 · 物理学 2017-11-22 Leonor Chico , P. A. Orellana , L. Rosales , M. Pacheco

Heat dissipation is one of the most serious problems in modern integrated electronics with the continuously decreasing devices size. Large portion of the consumed power is inevitably dissipated in the form of waste heat which not only…

应用物理 · 物理学 2021-07-21 Xue Gong , Ruijie Qian , Huanyi Xue , Weikang Lu , Zhenghua An

We investigate the thermoelectric properties of a one-dimensional quantum system in the presence of an external driving. We employ Floquet scattering theory to calculate linear-response stationary thermoelectric figures of merit in a…

介观与纳米尺度物理 · 物理学 2026-05-12 C. X. Zhang , Alessandro Braggio , Alessandro Romito , Fabio Taddei

We investigate the minimal requirements that induce a nonreciprocal response to temperature differences in a mesoscopic electronic conductor. We identify two distinct mechanisms involved in electron-electron interactions, namely inelastic…

介观与纳米尺度物理 · 物理学 2025-05-12 José Balduque , Rafael Sánchez

The interplay of charge, spin and heat transport is investigated in the fascinating research field of spin caloritronics, the marriage of spintronics and thermoelectrics. Here, many new spin-dependent thermal transport phenomena in magnetic…

In this work, we study the conductance and the thermoelectric properties of a quantum dot embedded between two metallic leads with a side-coupled triple quantum dot molecule under a magnetic field. We focus on the spin polarization and…

介观与纳米尺度物理 · 物理学 2017-10-16 J. P. Ramos-Andrade , F. J. Peña , A. González , O. Ávalos-Ovando , P. A. Orellana

We present systematic theoretical results on thermoelectric effects in semimetals based on the variational method of the linearized Boltzmann equation. Inelastic electron-hole scattering is known to play an important role in the unusual…

强关联电子 · 物理学 2023-03-31 Keigo Takahashi , Hiroyasu Matsuura , Hideaki Maebashi , Masao Ogata

Thermoelectric effects allow the generation of electrical power from waste heat and the electrical control of cooling and heating. Remarkably, these effects are also highly sensitive to the asymmetry in the density of states around the…

介观与纳米尺度物理 · 物理学 2016-07-13 I. J. Vera-Marun , J. J. van den Berg , F. K. Dejene , B. J. van Wees

Local variations in the Seebeck coefficient in low-dimensional materials-based nanostructures and devices play a major role in their thermoelectric performance. Unfortunately, currently most thermoelectric measurements probe the aggregate…

介观与纳米尺度物理 · 物理学 2020-08-25 Achim Harzheim , Charalambos Evangeli , Oleg V. Kolosov , Pascal Gehring

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

We report the nonlocal spin Seebeck effect (nlSSE) in a lateral configuration of Pt/Y$_3$Fe$_5$O$_{12}$(YIG)/Pt systems as a function of the magnetic field $B$ (up to 10 T) at various temperatures $T$ (3 K < $T$ < 300 K). The nlSSE voltage…

材料科学 · 物理学 2020-01-28 Koichi Oyanagi , Takashi Kikkawa , Eiji Saitoh

The Peltier coefficient describes the amount of heat that is carried by an electrical current when it passes through a material. Connecting two materials with different Peltier coefficients causes a net heat flow towards or away from the…

介观与纳米尺度物理 · 物理学 2012-04-02 J. Flipse , F. L. Bakker , A. Slachter , F. K. Dejene , B. J. van Wees

We theoretically study the electrolyte Seebeck effect in the vicinity of a heated metal nanostructure, such as the cap of an active Janus colloid in an electrolyte, or gold- coated interfaces in optofluidic devices. The thermocharge…

软凝聚态物质 · 物理学 2018-02-27 Aboubakry Ly , Arghya Majee , Alois Würger

Large heat currents are obtained in Co/Cu/Co spin valves positioned at the middle of Cu nanowires. The second harmonic voltage response to an applied current is used to investigate the effect of the heat current on the switching of the spin…

介观与纳米尺度物理 · 物理学 2015-03-13 Haiming Yu , Simon Granville , Dapeng Yu , Jean-Philippe Ansermet

We present the first thermoelectric measurements on pentacene field effect transistors. We report high values of the Seebeck coefficient at room temperature between 240 and 500 micro V/K depending on the dielectric surface treatment. These…

In this paper we investigate the spin-resolved thermoelectric properties of strongly correlated molecular junctions in the linear response regime. The magnetic molecule is modeled by a single orbital level to which the molecular core spin…

介观与纳米尺度物理 · 物理学 2021-05-25 Anand Manaparambil , Ireneusz Weymann

The charge and entropy currents across a quantum point contact is expanded as a series in powers of the applied bias voltage and the temperature difference. After that, the expansions of the Seebeck voltage in temperature difference and the…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Ali Cipiloglu , Sadi Turgut , Mehmet Tomak

The quest for efficient devices has fueled research in thermoelectric materials. In these materials, the goal is to maximize the Figure of Merit $ZT$. One of the components of this quantity is the Seebeck coefficient, which measures the…

We performed low-frequency ac first- and second-harmonic resistance measurements and dc $I-V$ measurements on bulk FeSe crystals in a temperature range between 1.8 and 150 K and in magnetic field up to 14 T. We observed considerable…

超导电性 · 物理学 2025-02-25 Taichi Terashima , Shinya Uji , Yuji Matsuda , Takasada Shibauchi , Shigeru Kasahara