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The presence of free spins in granular Al films is directly demonstrated by $\mu$SR measurements. A Mott transition is observed by probing the increase of the spin-flip scattering rate of conduction electrons as the nano-size metallic…

强关联电子 · 物理学 2015-06-04 N. Bachar , S. Lerer , S. Hacohen-Gourgy , B. Almog , H. Saadaoui , E. Morenzoni , G. Deutscher

Valence instability is a key ingredient of the unusual properties of f electron materials, yet a clear understanding is lacking as it involves a complex interplay between f electrons and conduc- tion states. Here we propose a unified…

Interest in high entropy alloy thermoelectric materials is predicated on achieving ultralow lattice thermal conductivity $\kappa\sub{L}$ through large compositional disorder. However, here we show that for a given mechanism, such as mass…

A semiempirical theory for the excitation and subsequent relaxation of nonthermal electrons is described. The theory, which is applicable to ultrafast-laser excited metals, is based on the Boltzmann transport equation for the carrier…

材料科学 · 物理学 2023-07-12 D. M. Riffe , Richard B. Wilson

We study heat transfer mediated by near-field fluctuations of the electromagnetic field. In case of metals the latter are dominated by Coulomb interactions between thermal fluctuations of electronic density. We show that an elastic…

介观与纳米尺度物理 · 物理学 2018-11-27 Alex Kamenev

We study the propagation of monochromatic surface waves on a turbulent flow. The flow is generated in a layer of liquid metal by an electromagnetic forcing. This forcing creates a quasi two-dimensional (2D) turbulence with strong vertical…

流体动力学 · 物理学 2015-11-19 Pablo Gutiérrez , Sébastien Aumaitre

Hydrogen embrittlement in metals is strongly governed by hydrogen diffusion and trapping, yet predicting these effects in polycrystalline systems remains challenging. This work introduces a multiscale modeling framework that links atomistic…

材料科学 · 物理学 2026-01-12 Bhanuj Jain , Alaa Olleak , Junyan He , Adarsh Chaurasia , Davide Di Stefano

Impurity diffusion coefficients are entirely obtained from a low cost classical molecular statics technique (CMST). In particular, we show how CMST is appropriate in order to describe the impurity diffusion behavior mediated by a vacancy…

材料科学 · 物理学 2014-06-10 Viviana P. Ramunni

The influence of local magnetic moment formation around three kinds of vacancies on the electron conduction through metallic single-wall carbon nanotubes is studied by use of the Landauer formalism within the coherent regime. The method is…

介观与纳米尺度物理 · 物理学 2010-06-18 R. Farghadan , A. Saffarzadeh

In all theoretical treatments of electron transport through single molecules between two metal electrodes, a clear distinction has to be made between a coherent transport regime with a strong coupling throughout the junction and a Coulomb…

介观与纳米尺度物理 · 物理学 2015-06-05 Robert Stadler , Jerome Cornil , Victor Geskin

A theory of the proximity effects of the exchange splitting in a ferromagnetic metal on a two dimensional electron gas (2DEG) in a semiconductor is presented. The resulting spin-dependent energy and lifetime in the 2DEG create a marked…

介观与纳米尺度物理 · 物理学 2009-11-10 J. P. McGuire , C. Ciuti , L. J. Sham

MnAs/GaAs superlattices, made by $\delta$-doping GaAs with Mn, are known as digital ferromagnetic heterostructures. Here we present a theoretical density functional study of the electronic, magnetic and transport properties of such…

材料科学 · 物理学 2009-11-07 Stefano Sanvito , Nicola A. Hill

We report a study on the static and dynamic properties of several liquid 5$d$ transition metals at thermodynamic conditions near their respective melting points. This is performed by resorting to ab initio molecular dynamics simulations in…

统计力学 · 物理学 2023-08-15 D. J. González , L. E. González

The Hall scattering factor is formulated using Rode's iterative approach to solving the Boltzmann transport equation in such a way that it may be easily computed within the scope of ab-inito calculations. Using this method in conjunction…

Light-matter momentum transfer in plasmonic materials is theoretically discussed in the framework of plasmonic pressure mechanism taking into account non-equilibrium electron dynamics and thermalization process. We show that our approach…

光学 · 物理学 2016-04-20 Maxim Durach , Natalia Noginova

We present some theoretical results on the lattice vibrations that are necessary for a concise derivation of the Debye-Waller factor in the harmonic approximation. First we obtain an expression for displacement of an atom in a crystal…

材料科学 · 物理学 2020-03-20 G. V. Paradezhenko , N. B. Melnikov , B. I. Reser

We propose a general formula for the melting temperature of metals in terms of electronic mass, electronic number, and nearest-neighbor lattice distance. We derive it from the instability of the transverse phonon in the solid phase, using…

其他凝聚态物理 · 物理学 2015-05-14 Tamifusa Matsuura , Hidenori Suzuki , Ken'ichi Takano , Fumihiro Honda

Peculiar dynamics of a free surface of the superfluid 4He has been observed experimentally with a newly established technique utilizing a number of electrically charged fine metal particles trapped electrically at the surface by Moroshkin…

其他凝聚态物理 · 物理学 2019-01-30 S. Inui , M. Tsubota , P. Moroshkin , P. Leiderer , K. Kono

We calculate multicomponent line-driven wind models of stars at extremely low metallicity suitable for massive first generation stars. For most of the models we find that the multicomponent wind nature is not important for either wind…

天体物理学 · 物理学 2011-05-12 J. Krticka , S. P. Owocki , J. Kubat , R. K. Galloway , J. C. Brown

The interaction of vacancy with dislocations in Al is studied using the Semidiscrete Variational Peierls-Nabarro model with ab initio determined gamma surface. For the first time, we confirm theoretically the so-called vacancy lubrication…

材料科学 · 物理学 2009-11-07 Gang Lu , Efthimios Kaxiras