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Recently, $\mathrm{BaSn_2}$ is predicted to be a strong topological insulator by the first-principle calculations. It is well known that topological insulator has a close connection to thermoelectric material, such as $\mathrm{Bi_2Te_3}$…

Materials Science · Physics 2016-12-21 San-Dong Guo , Liang Qiu

We present a first-principles theoretical approach for evaluating the lattice thermal conductivity based on the exact solution of the Boltzmann transport equation. We use the variational principle and the conjugate gradient scheme, which…

Materials Science · Physics 2014-06-24 Giorgia Fugallo , Michele Lazzeri , Lorenzo Paulatto , Francesco Mauri

We apply the generalized Boltzmann theory to describe thermoelectric transport properties of monolayer phosphorene in the presence of short- and long-range charged impurity interactions. First, we propose a low-energy Hamiltonian to explore…

Mesoscale and Nanoscale Physics · Physics 2017-01-27 Moslem Zare , Babak Zare Rameshti , Farnood G. Ghamsari , Reza Asgari

Here, we have investigated the thermoelectric properties of FeMnScGa alloy by combined use of full potential linearized augmented plane-wave (FP-LAPW) method and Boltzmann transport theory implemented in Wien2K and BoltzTraP code,…

Strongly Correlated Electrons · Physics 2020-12-02 Shubham Singh , Saurabh Singh , Nitinkumar Bijewar , Ashish Kumar

In a previous paper (Paper I) we developed a technique for exactly solving the linearized Boltzmann equation for the electrical and thermal transport coefficients in metals in the low-temperature limit. Here we adapt this technique to…

Statistical Mechanics · Physics 2021-01-04 J. Amarel , D. Belitz , T. R. Kirkpatrick

Thermoelectric transport in strongly spin-orbit coupled two-dimensional Rashba system is studied using the exact solution of the linearized Boltzmann equation. Some unusual transport behaviors are revealed. We show that the electrical…

Mesoscale and Nanoscale Physics · Physics 2016-03-23 Cong Xiao , Dingping Li , Zhongshui Ma

In this paper, a multiple-relaxation-time lattice Boltzmann model with an off-diagonal collision matrix was adopted to predict the effective thermal conductivities of the anisotropic heterogeneous materials whose components are also…

Computational Physics · Physics 2015-03-31 Wen-Zhen Fang , Jian-Jun Gou , Hu Zhang , Li Chen , Wen-Quan Tao

We investigate the electronic transport coefficients in unconventional superconductors at low temperatures, where charge and heat transport are dominated by electron scattering from random lattice defects. We discuss the features of the…

Superconductivity · Physics 2011-04-08 Matthias J. Graf

We study thermal transport in a one-dimensional (1d) interacting electron gas, employing the Luttinger liquid model. Both thermal conductance and thermopower are analyzed for a pure 1d gas and with impurities. The universal ratio of…

Condensed Matter · Physics 2009-10-28 C. L. Kane , Matthew P. A. Fisher

This work demonstrates a first-principles-based approach to obtaining finite temperature thermal and electronic transport properties which can be employed to model and understand mesoscale structural evolution during electronic, magnetic,…

Nonreciprocal transport phenomena indicate that the forward and backward flows differ, and are attributed to broken inversion symmetry. In this paper, we study the nonreciprocity of a thermal and thermoelectric transport of electronic…

Mesoscale and Nanoscale Physics · Physics 2019-03-13 Ryota Nakai , Naoto Nagaosa

The electron-electron interaction corrections to the transport coefficients are calculated for a two-dimensional disordered metal in a parallel magnetic field via the quantum kinetic equation approach. For the thermal transport, three…

Disordered Systems and Neural Networks · Physics 2007-05-23 G. Catelani

We have combined the Boltzmann transport equation with an {\it ab initio} approach to compute the thermoelectric coefficients of semiconductors. Electron-phonon, ionized impurity, and electron-plasmon scattering rates have been taken into…

Materials Science · Physics 2018-10-26 Z. Wang , S. Wang , S. Obukhov , N. Vast , J. Sjakste , V. Tyuterev , N. Mingo

Current phonon transport theory based on ground-state calculations has been successful in predicting thermal conductivity at room and medium temperatures but may misrepresent behavior at high temperatures. In this work, we predict the…

Materials Science · Physics 2023-12-20 Janak Tiwari , Tianli Feng

BoltzTraP2 is a software package for calculating a smoothed Fourier expression of periodic functions and the Onsager transport coefficients for extended systems using the linearized Boltzmann transport equation. It uses only the band and…

Materials Science · Physics 2018-08-01 Georg K. H. Madsen , Jesús Carrete , Matthieu J. Verstraete

The electronic and transport properties of (10, 0) single-walled carbon nanotube are studied by performing the first-principles calculations and semi-classical Boltzmann theory. It is found that the (10, 0) tube exhibits considerably large…

Mesoscale and Nanoscale Physics · Physics 2016-01-06 P. H. Jiang , H. J. Liu , D. D. Fan , L. Cheng , J. Wei , J. Zhang , J. H. Liang , J. Shi

The electronic structure and thermoelectric properties of are studied by the first principles and the semiclassical BoltzTrap theory.

Materials Science · Physics 2017-09-13 Gui Yang , jueming Yang , Yuli Yan , Yuanxu Wang

Using first-principles method and Boltzmann theory, we provide an accurate prediction of the electronic band structure and thermoelectric transport properties of alpha-MgAgSb. Our calculations demonstrate that only when an appropriate…

Materials Science · Physics 2016-06-22 C. Y. Sheng , H. J. Liu , D. D. Fan , L. Cheng , J. Zhang J. Wei , J. H. Liang , P. H. Jiang , J. Shi

The thermoelectric transport properties of $\text{Bi}_2\text{Te}_3/\text{Sb}_2\text{Te}_3$superlattices are analyzed on the basis of first-principles calculations and semi-classical Boltzmann theory. The anisotropy of the thermoelectric…

Materials Science · Physics 2012-09-11 N. F. Hinsche , B. Yu. Yavorsky , M. Gradhand , M. Czerner , M. Winkler , J. König , H. Böttner , I. Mertig , P. Zahn

The ac Harman method has been used for the direct estimation of dimensionless thermoelectric figure of merit (zT) through ac/dc resistance measurements. However, accurate zT estimation with a four-probe configuration is difficult owing to…

Materials Science · Physics 2024-04-16 Kenjiro Okawa , Yasutaka. Amagai , Norihiko Sakamoto , Nobu-Hisa Kaneko