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Related papers: Phonon-drag effect in FeGa3

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Inspired by the successful synthesis of several allotropes, boron sheets have been one of the hottest spot areas of focus in various fields. Here, we study phonon transport in three types of boron nanoribbons with zigzag and armchair edges…

Materials Science · Physics 2016-10-12 Zhongwei Zhang , Yuee Xie , Qing Peng , Yuanping Chen

Ferroelectrics with spontaneous electric polarization play an essential role in today's device engineering, such as capacitors and memories. Their physical properties are further enriched by suppressing the long-range polar order, as is…

Materials Science · Physics 2017-03-14 H. Sakai , K. Ikeura , M. S. Bahramy , N. Ogawa , D. Hashizume , J. Fujioka , Y. Tokura , S. Ishiwata

We carried out detailed studies of the magnetic structure, magnetoelastic coupling, and thermal properties of EuCrO$_3$ nano-powders from room temperature to liquid helium temperature. Our neutron powder diffraction and X-ray powder…

Strongly Correlated Electrons · Physics 2016-04-07 M. Taheri , F. S. Razavi , Z. Yamani , R. Flacau , P. G. Reuvekamp , A. Schulz , R. K. Kremer

Boron arsenide (BAs) single crystals had been previously reported to have thermal conductivity of 1500 W/mK at room temperature. Now we achieved thermal conductivity above 2100 W/mK at room temperature in BAs crystals due to much lower…

We report on a systematic optical investigation of w\"ustite. In addition, the sample under consideration, Fe0.93O, has been characterized in detail by electrical transport, dielectric, magnetic and thermodynamic measurements. From infrared…

Strongly Correlated Electrons · Physics 2015-06-04 F. Schrettle , Ch. Kant , P. Lunkenheimer , F. Mayr , J. Deisenhofer , A. Loidl

We report a study on the thermal conductivity of CuFe$_{1-x}$Ga$_x$O$_2$ ($x =$ 0--0.12) single crystals at temperatures down to 0.3 K and in magnetic fields up to 14 T. CuFeO$_2$ is a well-known geometrically frustrated triangular lattice…

Strongly Correlated Electrons · Physics 2017-06-19 J. D. Song , X. M. Wang , Z. Y. Zhao , J. C. Wu , J. Y. Zhao , X. G. Liu , X. Zhao , X. F. Sun

The two-dimensional graphene-like carbon allotrope, graphyne, has been recently fabricated and exhibits many interesting electronic properties. In this work, we investigate the thermoelectric properties of {\gamma}-graphyne by performing…

Mesoscale and Nanoscale Physics · Physics 2016-08-19 P. H. Jiang , H. J. Liu , L. Cheng , D. D. Fan , J. Zhang , J. Wei , J. H. Liang

We present measurements of the thermoelectric power of the plutonium-based unconventional superconductor PuCoGa$_{5}$. The data is interpreted within a phenomenological model for the quasiparticle density of states of intermediate valence…

Strongly Correlated Electrons · Physics 2016-11-10 K. Gofryk , J-C. Griveau , P. S. Riseborough , T. Durakiewicz

We report on extended investigation of the thermal transport and acoustical properties on hard carbon samples obtained by pressurization of C60 fullerene. Structural investigations performed by different techniques on the same samples…

Disordered Systems and Neural Networks · Physics 2009-11-07 J. C. Lasjaunias , M. Saint-Paul , A. Bilusic , A. Smontara , S. Gradecak , A. M. Tonejc , A. Tonejc , N. Kitamura

We investigate the thermopower of single molecules weakly coupled to metallic leads. We model the molecule in terms of the relevant electronic orbitals coupled to phonons corresponding to both internal vibrations and to oscillations of the…

Mesoscale and Nanoscale Physics · Physics 2009-09-29 Jens Koch , Felix von Oppen , Yuval Oreg , Eran Sela

An experimental setup was developed for the measurement of the thermoelectric power (TEP, Seebeck coefficient) in the temperature range from 2 to 350 K and magnetic fields up to 140 kOe. The system was built to fit in a commercial cryostat…

Instrumentation and Detectors · Physics 2015-05-18 Eundeok Mun , Sergey L. Bud'ko , Milton S. Torikachvili , Paul C. Canfield

We use a magnetothermal resistance method to measure lattice thermal conductivity of pure single crystal metals over a wide range of temperatures. Large transverse magnetic fields are applied to suppress electronic thermal conduction. The…

Materials Science · Physics 2017-10-25 Mengliang Yao , Mona Zebarjadi , Cyril P. Opeil

The electronic structure and thermopower ($\alpha$) behavior of LaFeO$_{3}$ compound were investigated by combining the ab-initio electronic structures and Boltzmann transport calculations. LSDA plus Hubbard U (U = 5 eV) calculation on…

Strongly Correlated Electrons · Physics 2018-05-09 Saurabh Singh , Shivprasad S. Shastri , Sudhir K. Pandey

We consider contribution to the phonon scattering, in the temperature range of 1K, by the dislocation kinks pinned in the random stress fields in a crystal. The effect of electron-kink scattering on the thermal transport in the normal…

Strongly Correlated Electrons · Physics 2018-08-01 J. A. M. van Ostaay , S. I. Mukhin

We report a study of selenospinel Cu$_{6-x}$Fe$_{4+x}$Sn$_{12}$Se$_{32}$ ($x$ = 0, 1, 2) single crystals, which crystalize in a cubic structure with the $Fd\overline{3}m$ space group, and show typical semiconducting behavior. The large…

Materials Science · Physics 2023-08-01 Yu Liu , Zhixiang Hu , Xiao Tong , David Graf , C. Petrovic

In low-dimensional systems, the combination of reduced dimensionality, strong interactions, and topology has led to a growing number of many-body quantum phenomena. Thermal transport, which is sensitive to all energy-carrying degrees of…

We report on structural, magnetic, conductivity, and thermodynamic studies of FeSe$_{0.5}$Te$_{0.5}$ single crystals grown by self-flux and Bridgman methods. The samples were prepared from starting materials of different purity at various…

Superconductivity · Physics 2011-03-25 V. Tsurkan , J. Deisenhofer , A. Günther , Ch. Kant , H. -A. Krug von Nidda , F. Schrettle , A. Loidl

Within the framework of nonequilibrium Green's functions, we investigate the thermoelectric transport in a single molecular junction with electron-phonon and electron-electron interactions. By transforming into a displaced phonon basis, we…

Mesoscale and Nanoscale Physics · Physics 2012-04-26 Jie Ren , Jian-Xin Zhu , James E. Gubernatis , Chen Wang , Baowen Li

High quality single crystals of Bi2Se3 were grown using a modified Bridgman technique, the detailed study were carried out using Raman spectroscopy and characterized by Laue diffraction and high resolution transmission electron microscopy.…

Bismuth oxyselenide (Bi$_2$O$_2$Se) attracts great interest as a potential n-type complement to p-type thermoelectric oxides in practical applications. Previous investigations were generally focused on polycrystals. Here, we performed a…

Materials Science · Physics 2021-09-01 Jialu Wang , Wanghua Hu , Zhefeng Lou , Zhuokai Xu , Xiaohui Yang , Tao Wang , Xiao Lin
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