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The transport properties of diluted magnetic semiconductors (DMS) are calculated using dynamical mean field theory (DMFT) and Boltzmann transport theory. Within DMFT we study the density of states and the dc-resistivity, which are strongly…

Materials Science · Physics 2009-11-11 E. H. Hwang , S. Das Sarma

We propose an efficient scheme, which combines density functional theory (DFT) with deep potentials (DP), to systematically study the convergence issues of the computed electronic thermal conductivity of warm dense Al (2.7 g/cm$^3$,…

Computational Physics · Physics 2024-06-19 Qianrui Liu , Junyi Li , Mohan Chen

A comparative study of wurtzite ZnO doped by rare earth elements (Tm, Yb, Ce) have been investigated using density functional theory (DFT) based on the full-potential linearized augmented plane wave orbital (FP-LAPW) method, as implemented…

Materials Science · Physics 2020-04-23 M. Khuili , N. Fazouan , H. Abou El Makarim , E. H. Atmani , D. P. Rai , M. Houmad

The Ziman formulation of electrical conductivity is tested in warm and hot dense matter using the pseudo-atom molecular dynamics method. Several implementation options that have been widely used in the literature are systematically tested…

Plasma Physics · Physics 2015-09-15 D. J. Burrill , D. Feinblum , M. R. J. Charest , C. E. Starrett

Normally, understanding the temperature dependent transport properties of strongly correlated electron systems remains challenging task due to complex electronic structure and its variations (around E$_{F}$) with temperature. Here, we…

Strongly Correlated Electrons · Physics 2017-03-21 Saurabh Singh , Devendra Kumar , Sudhir K. Pandey

We report an investigation of temperature- and doping-dependent thermoelectric behaviors of topological semimetal Cd3As2. The electrical conductivity, thermal conductivity, Seebeck coefficient, and figure of merit (ZT) are calculated by…

Materials Science · Physics 2016-11-22 Tong Zhou , Cheng Zhang , Huisheng Zhang , Faxian Xiu , Zhongqin Yang

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…

Materials Science · Physics 2020-03-13 Sonu Prasad Keshri , Amal Medhi

Silicon carbide nanoparticles with diameters around 8 nm and with narrow size distribution have been finely mixed with doped silicon nanopowders and sintered into bulk samples to investigate the influence of nanoinclusions on electrical and…

Materials Science · Physics 2021-10-27 S. Aria Hosseini , Devin Coleman , Sabah Bux , P. Alex Greaney , Lorenzo Mangolini

While methods based on density-functional perturbation theory have dramatically improved our understanding of electron-phonon contributions to transport in materials, methods for accurately capturing electron-electron scattering relevant to…

Here, we study the thermoelectric properties of topological semimetal CoSi in the temperature range $300-800$ K by using combined experimental and density functional theory (DFT) based methods. CoSi is synthesized using arc melting…

Materials Science · Physics 2022-05-04 Shamim Sk , Nisha Shahi , Sudhir K. Pandey

We present an ab initio analysis with density functional theory for superconductors (SCDFT) to understand the superconducting mechanism of doped layered nitrides \beta-Li$_x$MNCl (M=Ti, Zr, and Hf). The current version of SCDFT is based on…

Superconductivity · Physics 2012-09-07 Ryosuke Akashi , Kazuma Nakamura , Ryotaro Arita , Masatoshi Imada

The electronic and transport properties of CuInTe2 chalcopyrite are investigated using density functional calculations combined with Boltzmann theory. The band gap predicted from hybrid functional is 0.92 eV, which agrees well with…

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

Using the density functional theory (DFT) in combination with Boltzmann transport theory, the influence of Mg concentrations (x) doping on the thermoelectric properties of Hg1-xMgxSe ternary alloys was systematically investigated. The…

Materials Science · Physics 2023-03-28 Y. Selmani , H. Labrim , A. Jabar , L. Bahmad

The recently proposed density functional theory for steady-state transport (i-DFT) is extended to include temperature gradients between the leads. Within this framework, a general and exact expression is derived for the linear Seebeck…

Strongly Correlated Electrons · Physics 2019-12-04 Nahual Sobrino , Roberto D'Agosta , Stefan Kurth

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…

Strongly Correlated Electrons · Physics 2009-11-11 Claas Grenzebach , Frithjof B. Anders , Gerd Czycholl , Thomas Pruschke

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…

Materials Science · Physics 2014-04-22 H. Y. Lv , W. J. Lu , D. F. Shao , Y. P. Sun

Thermoelectric materials are opening a promising pathway to address energy conversion issues governed by a competition between thermal and electronic transport. Improving the efficiency is a difficult task, a challenge that requires new…

Materials Science · Physics 2017-09-13 G. Bouzerar , S. Thébaud , Ch. Adessi , R. Debord , M. Apreutesei , R. Bachelet , S. Pailhès

We report a combined theoretical and experimental search for thermoelectric materials based on semiconducting zinc antimony. Influence of three new doping elements (sodium, potassium and boron) on the electronic properties is investigated…

Materials Science · Physics 2014-08-27 K Niedziolka , R Pothin , F Rouessac , R M Ayral , P Jund

We present a method which uses density functional theory (DFT) to treat transport through a single molecule connected to two conducting leads for the weak and intermediate coupling. This case is not accessible to standard non-equilibrium…

Mesoscale and Nanoscale Physics · Physics 2011-01-21 Fatemeh Mirjani , Joseph M. Thijssen

This work investigates how site-specific doping can enhance the thermoelectric performance of tetragonal Cu$_{2}$S using Density functional Theory and Projected Atomic Orbital Framework for Electronic Transport. We address the gap in…

Materials Science · Physics 2025-01-29 Sonam Phuntsho
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