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相关论文: Three-Dimensional Anisotropic Thermal Conductivity…

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The 3$\omega$ method is widely used to measure the thermal conductivity and the specific heat of wires and thin films. These measurements are typically performed under high vacuum conditions, which justify the use of heat transfer models…

应用物理 · 物理学 2025-12-23 Chuyue Peng , Joshua Ginzburg , Uri Dickman , Jacob Bair , Matthias Kuehne

We use reverse non-equilibrium molecular dynamics (RNEMD) simulations to determine the thermal conductivity in $\alpha$-RDX in the <100>, <010>, and <001> crystallographic directions. Simulations are carried out with the Smith-Bharadwaj…

The structural and thermal properties of bulk Td-WTe2 have been studied by using first-principles calculations. We find that the lattice thermal conductivity of WTe2 is anisotropic, with the highest value along a-axis and lowest one along…

介观与纳米尺度物理 · 物理学 2016-03-23 Gang Liu , Hong Yi Sun , Jian Zhou , Qing Fang Li , X. G. Wan

The observation of a two dimensional electron gas (2DEG) (1, 2), superconductivity (3, 4), magnetic effects (5) and electronic phase separation (6-8) at the interfaces of insulating oxides, especially LaAlO3/SrTiO3, has further enhanced the…

Because of its ultrawide bandgap, high breakdown electric field, and large area affordable substrates grown from the melt, beta Ga2O3 has attracted great attention recently for potential applications of power electronics. However, its…

介观与纳米尺度物理 · 物理学 2019-01-11 Zhe Cheng , Luke Yates , Jingjing Shi , Marko J. Tadjer , Karl D. Hobart , Samuel Graham

We report the discovery of temperature-invariant ultralow thermal conductivity ($\kappa$) in monolayer $\beta'$-In$_2$Se$_3$, a two-dimensional ferroelectric crystal with in-plane polarization. Using a combination of generalized Wigner…

材料科学 · 物理学 2025-01-24 Wenjie Zhou , Shi Liu

The cross-plane thermal conductivity of a type II InAs/GaSb superlattice (T2SL) is measured from 13 K to 300 K using the 3{\omega} method. Thermal conductivity is reduced by up to 2 orders of magnitude relative to the GaSb bulk substrate.…

材料科学 · 物理学 2015-05-30 Chuanle Zhou , B. -M. Nguyen , M. Razeghi , M. Grayson

We have studied U_3Si_2 by means of the heat capacity, electrical resistivity, Seebeck and Hall effects, and thermal conductivity in the temperature range 2-300 K and in magnetic fields up to 9 T. All the results obtained point to…

We study the anisotropic in-plane optical conductivity of detwinned Ba(Fe1-xCox)2As2 single crystals for x=0, 2.5% and 4.5% in a broad energy range (3 meV-5 eV) across their structural and magnetic transitions. For temperatures below the…

强关联电子 · 物理学 2016-11-25 A. Lucarelli , A. Dusza , A. Sanna , S. Massidda , J. -H. Chu , I. R. Fisher , L. Degiorgi

The crystal structure of bulk SrTiO$_3$(STO) transitions from cubic to tetragonal at around 105K. Recent local scanning probe measurements of LaAlO$_3$/SrTiO$_3$ (LAO/STO) interfaces indicated the existence of spatially inhomogeneous…

The thermoelectric properties of single- and polycrystalline FeGa3 are systematically investigated over a wide temperature range. At low temperatures, below 20 K, previously not known pronounced peaks in the thermal conductivity (400-800 W…

We propose a model and derive analytical expressions for conductivity in heterogeneous fully anisotropic conductors with ellipsoid superconducting inclusions. This model and calculations are useful to analyze the observed temperature…

超导电性 · 物理学 2018-10-02 S. S. Seidov , K. K. Kesharpu , P. I. Karpov , P. D. Grigoriev

We present a detailed study of single crystalline K$_{2}$Cr$_{3}$As$_{3}$ and analyze its thermodynamic and transport properties, anisotropic $H_{c2}(T)$, and initial pressure-dependence of $T_{c}$. In zero-field, the temperature-dependent…

超导电性 · 物理学 2015-03-05 Tai Kong , Sergey L. Bud'ko , Paul C. Canfield

We present theoretical calculations of the thermal conductivity for the accidental degeneracy and enlarged symmetry group models that have been proposed to explain the phase diagram of UPt3. The order parameters for these models possess…

超导电性 · 物理学 2011-04-08 M. J. Graf , S. -K. Yip , J. A. Sauls

We study the thermal conductivity within the E$_{1g}$ and E$_{2u}$ models for superconductivity in UPt$_3$ and compare the theoretical results for electronic heat transport with recently measured results reported by Lussier, Ellman and…

凝聚态物理 · 物理学 2009-10-28 M. J. Graf , S. -K. Yip , J. A. Sauls

The reduction of the thermal conductivity in nanostructures opens up the possibility of exploiting for thermoelectric purposes also materials such as silicon, which are cheap, available and sustainable but with a high thermal conductivity…

介观与纳米尺度物理 · 物理学 2018-02-14 G. Pennelli , E. Dimaggio , M. Macucci

We present new measurements of the thermal conductivity of UPt3 down to very low temperatures (16mK) and under magnetic fields (up to 4 T) which cover all the superconducting phases of UPt3. The measurements in zero field are compared with…

强关联电子 · 物理学 2009-10-30 H. Suderow , J. P. Brison , A. Huxley , J. Flouquet

Temperature dependent measurements of the resistivity on RuIn$_3$ single crystals show a semiconducting behaviour, in contrast to previously published results. In the high temperature range the semiconducting gap was measured to be…

材料科学 · 物理学 2007-08-29 D. Bogdanov , K. Winzer , I. A. Nekrasov , T. Pruschke

Single crystals of A2Cr3As3 (A = K, Rb) were successfully grown using a self-flux method and studied via structural, transport and thermodynamic measurement techniques. The superconducting state properties between the two species are…

超导电性 · 物理学 2015-07-29 X. F. Wang , C. Roncaioli , C. Eckberg , H. Kim , J. Yong , Y. Nakajima , S. R. Saha , P. Y. Zavalij , J. Paglione

We have studied the optical properties of the heavy-fermion compound UNi2Al3 at frequencies between 100 GHz and 1 THz (3 cm^-1 and 35 cm^-1), temperatures between 2 K and 300 K, and magnetic fields up to 7 T. From the measured transmission…

强关联电子 · 物理学 2012-11-14 Julia P. Ostertag , Marc Scheffler , Martin Dressel , Martin Jourdan