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We predict an enormous order-dependent quantum enhancement of thermoelectric effects in the vicinity of a higher-order `supernode' in the transmission spectrum of a nanoscale junction. Single-molecule junctions based on 3,3'-biphenyl and…

介观与纳米尺度物理 · 物理学 2011-08-04 J. P. Bergfield , M. Solis , C. A. Stafford

Novel organic materials formed from functional molecules are attractive for various nanoelectronic applications because they are environmentally friendly, widely available and inexpensive. Recent advancement in bottom-up fabrication methods…

介观与纳米尺度物理 · 物理学 2022-12-14 Abdalghani Daaoub , Renhang Wang , Ross Davidson , Sara Sangtarash , Hatef Sadeghi

The energy dependent thermoelectric response of a single molecule contains valuable information about its transmission function and its excited states. However, measuring it requires devices that can efficiently heat up one side of the…

We propose a scheme of multilayer thermoelectric engine where {\em one} electric current is coupled to {\em two} temperature gradients in three-terminal geometry. This is realized by resonant tunneling through quantum dots embedded in two…

介观与纳米尺度物理 · 物理学 2015-07-06 Jian-Hua Jiang

We study the low temperature properties of the differential response of the current to a temperature gradient at finite voltage in a single level quantum dot including electron-electron interaction, non-symmetric couplings to the leads and…

强关联电子 · 物理学 2018-05-04 Diego Pérez Daroca , Pablo Roura-Bas , Armando A. Aligia

We report on the single-molecule electronic and thermoelectric properties of strategically chosen anthracene-based molecules with anchor groups capable of binding to noble metal substrates, such as gold and platinum. Specifically, we study…

Harnessing the quantum coherence and tunability of molecular-scale structures, we theoretically explore thermoelectric transport in ring-shaped molecular junctions featuring dimerized hopping integrals. By engineering alternating strong and…

其他凝聚态物理 · 物理学 2025-12-17 Ranjini Bhattacharya , Souvik Roy

This work explores different mechanisms that induce thermal rectification in the nanoscale. The presence of interacting energy channels combined with simple asymmetries is sufficient for promoting the desired behavior. We use simple quantum…

介观与纳米尺度物理 · 物理学 2018-07-12 Alejandro Marcos-Vicioso , Carmen López-Jurado , Miguel Ruiz-Garcia , Rafael Sánchez

It was recently suggested that molecular junctions would be excellent elements for efficient and high-power thermoelectric energy conversion devices. However, experimental measurements of thermoelectric conversion in molecular junctions…

介观与纳米尺度物理 · 物理学 2015-06-09 Elinor Zerah-Harush , Yonatan Dubi

It is theoretically demonstrated that the figure of merit ($ZT$) of quantum dot (QD) junctions can be significantly enhanced when the degree of degeneracy of the energy levels involved in electron transport is increased. The theory is based…

介观与纳米尺度物理 · 物理学 2017-03-08 David M T Kuo , Chih-Chieh Chen , Yia-Chung Chang

We study the thermoelectric properties and heat-to-work conversion performance of an interacting, multi-level quantum dot (QD) weakly coupled to electronic reservoirs. We focus on the sequential tunneling regime. The dynamics of the charge…

介观与纳米尺度物理 · 物理学 2017-06-29 Paolo Andrea Erdman , Francesco Mazza , Riccardo Bosisio , Giuliano Benenti , Rosario Fazio , Fabio Taddei

We study the thermopower of a junction between a metal and a strongly correlated semiconductor. Both in the electronic ferroelectric regime and in the Kondo insulator regime the thermoelectric figures of merit, ZT, of these junctions are…

强关联电子 · 物理学 2009-07-20 Massimo Rontani , L. J. Sham

We theoretically study the nonequilibrium thermoelectric transport properties of a strongly-correlated molecule (or quantum dot) embedded in a tunnel junction. Assuming that the coupling of the molecule to the contacts is asymmetric, we…

介观与纳米尺度物理 · 物理学 2023-02-22 Anand Manaparambil , Ireneusz Weymann

We show that coherent electron transport through zero-dimensional systems can be used to tailor the shape of the system's transmission function. This quantum-engineering approach can be used to enhance the performance of quantum dots or…

介观与纳米尺度物理 · 物理学 2011-10-10 Olov Karlstrom , Heiner Linke , Gunnar Karlstrom , Andreas Wacker

We investigate thermal transport in a serial asymmetric double quantum dot (DQD) coupled to two electron reservoirs with different temperatures. The inter- and intra-Coulomb interactions are taken into account in a Coulomb blockade DQD…

介观与纳米尺度物理 · 物理学 2022-07-12 Bashdar Rahman Pirot , Nzar Rauf Abdullah , Ari Karim Ahmed

Quantum interference (QI) can strongly enhance thermoelectric response, with higher-order "supernodes" predicted to yield scalable gains in thermopower and efficiency. A central question, however, is whether such features are intrinsically…

介观与纳米尺度物理 · 物理学 2025-10-09 Justin P. Bergfield

Technological and scientific advances have given rise to an era in which coherent quantum-mechanical phenomena can be probed and experimentally-realised over unprecedented timescales in condensed matter physics. In turn, scientific interest…

量子物理 · 物理学 2021-12-23 Marlon Brenes

The electrical conductance, thermal conductance, thermal power and figure of merit (ZT) of semiconductor quantum dots (QDs) embedded into an insulator matrix connected with metallic electrodes are theoretically investigated in the Coulomb…

介观与纳米尺度物理 · 物理学 2015-05-18 David M. -T. Kuo , Yia-chung Chang

The thermoelectric voltage developed across an atomic metal junction (i.e., a nanostructure in which one or a few atoms connect two metal electrodes) in response to a temperature difference between the electrodes, results from the quantum…

Quantum dots (QDs) are good model systems for fundamental studies of mesoscopic transport phenomena using thermoelectric effects because of their small size, electrostatically tunable properties and thermoelectric response characteristics…

介观与纳米尺度物理 · 物理学 2016-11-16 Artis Svilans , Martin Leijnse , Heiner Linke
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