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The energy dissipation and heat flows associated with the particle current in a system with a molecular junction are considered. In this connection, we determine the effective temperature of the molecular oscillator that is compatible with…

介观与纳米尺度物理 · 物理学 2018-03-20 Jan Loos , Thomas Koch , Holger Fehske

We investigate the thermoelectric response of single-molecule junctions composed of acyclic cross-conjugated molecules, including dendralene analogues and related iso-poly(diacetylene) (iso-PDA) motifs, in which node-possessing repeat units…

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

Using density functional theory combined with a Green's function scattering approach, we examine the thermoelectric properties of hetero-nanoribbons formed from alternating lengths of graphene and boron nitride. In such structures, the…

介观与纳米尺度物理 · 物理学 2015-10-06 L. A. Algharagholy , Q. Al-Galiby , H. A. Marhoon , H. Sadeghi , H. M. Abduljalil , C. J. Lambert

Temperature dependent thermoelectric power (TEP) data on Ba(Fe1-xTMx)2As2 (TM = Co and Cu), complemented by the Hall coefficient data on the samples from the same batches, have been measured. For Co-doping we clearly see a change in the…

超导电性 · 物理学 2015-05-13 Eun Deok Mun , Sergey L. Bud'ko , Ni Ni , Paul C. Canfield

Thermoelectric effects in a quantum dot coupled to the source and drain charge reservoirs are explored using a nonequilibrium Green's functions formalism beyond the Hartree-Fock approximation. Thermal transport is analyzed within a linear…

材料科学 · 物理学 2014-03-18 Natalya A. Zimbovskaya

The electronic structure and thermoelectric properties of ZrRuTe-based Half-Heusler compounds are studied using density functional theory (DFT) and Boltzmann transport formalism. Based on rigorous computations of electron relaxation time…

材料科学 · 物理学 2020-03-13 Sonu Prasad Keshri , Amal Medhi

Expanding the operational range of luminescent thermometers that utilize thermally induced structural phase transitions in lanthanide-doped materials necessitates the exploration of novel host matrices with diverse thermal behaviors. In…

Electron-ion interactions play a central role for the energy relaxation processes and ultra-fast structure dynamics in laser-heated matter. The accurate prediction of the electron-ion energy exchange in a transient excited two-temperature…

其他凝聚态物理 · 物理学 2024-01-17 Jia Zhang , Rui Qin , Wenjun Zhu , Jan Vorberger

We present a systematic investigation of the effect of H, B, C, and N interstitials on the electronic, lattice and magnetic properties of La(Fe,Si)$_{13}$ using density functional theory. The parent LaSiFe$_{12}$ alloy has a shallow,…

材料科学 · 物理学 2017-12-14 Z. Gercsi , N. Fuller , K. G. Sandeman , A. Fujita

Fluorite structure ferroelectrics, especially hafnium oxide, are widely investigated for their application in non-volatile memories, sensors, actuators, RF devices and energy harvesters. Due to the metastable nature of the ferroelectric…

The electrical, magnetic, thermal and optical characteristics of Gallium (Ga) doped silicene are investigated using density functional theory (DFT). The effect of doping is studied by tuning dopant concentrations as well as examining varied…

材料科学 · 物理学 2022-04-05 Nzar Rauf Abdullah , Botan Jawdat Abdullah , Vidar Gudmundsson

The linear thermoelectric properties of molecular junctions are theoretically studied close to room temperature within a model including electron-electron and electron-vibration interactions on the molecule. A nonequilibrium adiabatic…

介观与纳米尺度物理 · 物理学 2015-11-26 C. A. Perroni , D. Ninno , V. Cataudella

Due to their structured density of states, molecular junctions provide rich resources to filter and control the flow of electrons and phonons. Here we compute the out of equilibrium current-voltage characteristics and dissipated heat of…

介观与纳米尺度物理 · 物理学 2023-11-01 Fatemeh Tabatabaei , Samy Merabia , Bernd Gotsmann , Mika Prunnila , Thomas A. Niehaus

We investigate the thermoelectric properties of PbTe doped with a small concentration $x$ of Tl impurities acting as acceptors and described by Anderson impurities with negative on-site (effective) interaction. The resulting charge Kondo…

强关联电子 · 物理学 2013-04-11 T. A. Costi , V. Zlatić

Thermoelectric effects through a serial double quantum dot system weakly coupled to ferromagnetic leads are analyzed. Formal expressions of electrical conductance, thermal conductance, and thermal coefficient are obtained by means of…

介观与纳米尺度物理 · 物理学 2012-04-18 M. Bagheri Tagani , H. Rahimpour Soleimani

In this work, we investigate thermoelectric properties of junctions consisting of two partially overlapped graphene sheets coupled to each other in the cross-plane direction. It is shown that because of the weak van-der Waals interactions…

介观与纳米尺度物理 · 物理学 2014-10-07 V. Hung Nguyen , M. Chung Nguyen , Huy-Viet Nguyen , J. Saint-Martin , P. Dollfus

We investigate the thermoelectric transport properties of an interacting parallel double quantum dot in the Coulomb-blockade regime. Building on an analytical solution based on an equation-of-motion technique, we extend the formalism for…

介观与纳米尺度物理 · 物理学 2025-10-24 Nahual Sobrino

We study the electronic transport coefficients and the thermoelectric figure of merit ZT in $n$-doped Mg$_3$Sb$_2$ based on density-functional electronic structure and Bloch-Boltzmann transport theory with an energy- and…

We investigate nonlinear thermal transport properties of a single interacting quantum dot with two energy levels tunnel-coupled to two electrodes using nonequilibrium Green function method and Hartree-Fock decoupling approximation. In the…

介观与纳米尺度物理 · 物理学 2009-11-13 Chen Xue-Ou , Bing Dong , X. L. Lei

Two-dimensional (2D) bismuth (Bi) layer, known as bismuthene, exhibits $Z2$ topological bulk states due to large spin-orbit coupling that inverts the bands. Using the tight-binding method, we calculate the band structure of buckled…

介观与纳米尺度物理 · 物理学 2021-05-12 Muhammad Gaffar , Sasfan Arman Wella , Eddwi Hesky Hasdeo