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By using a first-principles approach, monolayer PbI$_2$ is found to have great potential in thermoelectric applications. The linear Boltzmann transport equation is applied to obtain the perturbation to the electron distribution by different…

材料科学 · 物理学 2021-05-24 Bo Peng , Haodong Mei , Hao Zhang , Hezhu Shao , Ke Xu , Gang Ni , Qingyuan Jin , Costas M. Soukoulis , Heyuan Zhu

We calculate the Kapitza conductance, which is the proportionality coefficient between heat flux and temperature jump at the interface, for the case of two conducting solids separated by the interface. We show that for conducting solids in…

介观与纳米尺度物理 · 物理学 2023-06-29 A. P. Meilakhs

The electronic properties of the layered black phosphorus (black-P) and its monolayer counterpart phosphorene are investigated by using the first-principles calculations based on the density functional theory (DFT). The room-temperature…

材料科学 · 物理学 2014-04-22 H. Y. Lv , W. J. Lu , D. F. Shao , Y. P. Sun

In this work we study thermoelectric properties of graphene nanoribbons with side-attached organic molecules. By adopting a single-band tight binding Hamiltonian and the Green's function formalism, we calculated the transmission and Seebeck…

介观与纳米尺度物理 · 物理学 2013-06-26 L. Rosales , C. D. Nunez , M. Pacheco , A. Latge , P. A. Orellana

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

While the thermoelectric figure of merit zT above 300K has seen significant improvement recently, the progress at lower temperatures has been slow, mainly limited by the relatively low Seebeck coefficient and high thermal conductivity. Here…

Some of the most promising candidates for next generation thermoelectrics are nanocomposites due to their low thermal conductivities that result from phonon scattering on the boundaries of the various material phases. However, in order to…

材料科学 · 物理学 2019-03-04 Samuel Foster , Mischa Thesberg , Neophytos Neophytou

Bulk single crystal Molybdenum diselenide has been studied for its electronic and thermal transport properties. We perform resistivity measurements with current in-plane (CIP) and current perpendicular to plane (CPP) as a function of…

材料科学 · 物理学 2017-07-11 Dhavala Suri , R. S. Patel

Investigation of Seebeck coefficient in ultra-wide bandgap materials presents a challenge in measurement, nevertheless, it is essential for understanding fundamental transport mechanisms involved in electrical and thermal conduction.…

材料科学 · 物理学 2021-02-24 Ashish Kumar , Saurabh Singh , Bhera Ram Tak , Ashutosh Patel , K. Asokan , D. Kanjilal

We present a simple but powerful method to determine the thicknesses of the accumulation and depletion layers and the distribution curve of injected carriers in organic field effect transistors. The conductivity of organic semiconductors in…

We present a study on inelastic thermoelectric devices, wherein charge currents and electronic and phononic heat currents are intricately interconnected. The employment of double quantum dots in conjunction with a phonon bath positions them…

介观与纳米尺度物理 · 物理学 2024-08-06 Bei Cao , Chongze Han , Xiang Hao , Chen Wang , Jincheng Lu

We present measurements of thermal and electrical spin injection in nanoscale metallic non-local spin valve (NLSV) structures. Informed by measurements of the Seebeck coefficient and thermal conductivity of representative films made using a…

介观与纳米尺度物理 · 物理学 2016-07-27 Alex Hojem , Devin Wesenberg , Barry L. Zink

The electronic thermal conductivity of graphene and 2D Dirac materials is of fundamental interest and can play an important role in the performance of nano-scale devices. We report the electronic thermal conductivity, $K_{e}$, in suspended…

介观与纳米尺度物理 · 物理学 2013-07-01 S. Yiğen , V. Tayari , J. O. Island , J. M. Porter , A. R. Champagne

Based on the concept of band bending at metal/semiconductor interfaces as an energy filter for electrons, we present a theory for the enhancement of the thermoelectric properties of semiconductor materials with metallic nanoinclusions. We…

材料科学 · 物理学 2008-07-03 Sergey V. Faleev , François Léonard

We calculate the temperature dependence of the transport properties of heavy-fermion systems such as resistivity, optical conductivity, thermoelectric power, the electronic part of the thermal conductivity, and the "figure of merit." The…

强关联电子 · 物理学 2009-11-11 Claas Grenzebach , Frithjof B. Anders , Gerd Czycholl , Thomas Pruschke

PbSe is a low-gap semiconductor with excellent infrared photo-detection properties. Here we report our high magnetic field and low temperature electrical properties measurement performed on a moderately doped PbSe single crystals with…

介观与纳米尺度物理 · 物理学 2015-12-18 Naween Anand , C. Martin , Genda Gu , David B. Tanner

We have fabricated bilayer-graphene double layers separated by a thin ($\sim$20 nm) boron nitride layer and performed Coulomb drag and counterflow thermoelectric transport measurements. The measured Coulomb drag resistivity is nearly three…

介观与纳米尺度物理 · 物理学 2017-09-11 Jiuning Hu , Tailung Wu , Jifa Tian , Nikolai Klimov , David Newell , Yong P. Chen

We investigate the doping-dependence of the Seebeck coefficient, as calculated from the Kelvin formula, for the Fermi Hubbard model using determinantal quantum Monte Carlo simulations. Our key findings are: (1) Besides the expected hole to…

强关联电子 · 物理学 2025-03-31 Sayantan Roy , Abhisek Samanta , Nandini Trivedi

Samples of heavy fermion compound CeCu6 were prepared by hot-press technique. Temperature-dependent (5-300 K) thermoelectric transport properties of the samples were measured. The dimensionless figure-of-merit (ZT) was optimized by varying…

材料科学 · 物理学 2013-12-16 Mani Pokharel , Tulashi Dahal , Zhifeng Ren , Cyril Opeil

The iron-oxypnictide compounds, recently reported as a new class of superconductors when appropriately doped, exhibit large Seebeck coefficients, of the order of -100 microV/K, while keeping good electrical conductivity. Their power factor…

超导电性 · 物理学 2008-07-23 Loreynne Pinsard-Gaudart , David Berardan , Julien Bobroff , Nita Dragoe