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Related papers: Tabular Electrical Conductivity for Aluminum

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We investigate the locality of electronic interactions in aluminum as a function of smearing/electronic temperature in the context of $\mathcal{O}(N)$ Density Functional Theory calculations. Specifically, we determine the convergence in…

Materials Science · Physics 2017-05-24 Phanish Suryanarayana

The density functional theory for superconductors developed in the preceding article [cond-mat/0408685] is applied to the calculation of superconducting properties of several elemental metals. In particular, we present results for the…

The electrical conductivity of a CdS thin film, controlled by grain structures is essential to enhance its photoconductivity to be able to be fit as a window material in CdS/CdTe heterojunction solar cell. In order to characterize a thin…

Materials Science · Physics 2016-09-21 Rezwanur Rahman , John A. Scales

For unpolarized electrons in a clean quantum wire, density functional theory reveals a thermally activated suppression of conductance. The activation temperature T_A grows slowly (roughly quadratically) with gate voltage due to pinning of…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Kenji Hirose , Ned S. Wingreen

Al(110) has been studied for temperatures up to 900 K via ensemble density-functional molecular dynamics. The strong anharmonicity displayed by this surface results in a negative coefficient of thermal expansion, where the first interlayer…

Materials Science · Physics 2009-10-31 Nicola Marzari , David Vanderbilt , Alessandro De Vita , M. C. Payne

Superconducting heat switches with extremely low normal state resistances are needed for constructing continuous nuclear demagnetization refrigerators with high cooling power. Aluminum is a suitable superconductor for the heat switch…

The thermoelectric properties of two typical SiGe nanotubes are investigated using a combination of density functional theory, Boltzmann transport theory, and molecular dynamics simulations. Unlike carbon nanotubes, these SiGe nanotubes…

Materials Science · Physics 2015-02-24 J. Wei , H. J. Liu , X. J. Tan , L. Cheng , J. Zhang , D. D. Fan , J. Shi , X. F. Tang

Metal ion implantation into ceramics has been demonstrated to be an effective and controllable technique for tailoring the surface electrical conductivity of the ceramic piece, and this approach has been used in a number of applications.…

Materials Science · Physics 2019-10-14 R. E. Spirin , M. C. Salvadori , L. G. Sgubin , I. G. Brown

Multiwalled carbon nanotubes are shown to be ballistic conductors at room temperature, with mean free paths of the order of tens of microns. These experiments follow and extend the original experiments by Frank et al (Science, 280 1744…

Materials Science · Physics 2007-05-23 Philippe Poncharal , Claire Berger , Yan Yi , Z. L. Wang , Walt A. de Heer

Using density functional theory the atomic and electronic structure of sodium are predicted to depart substantially from those expected of simple metals for $r_s <$ 2.48 ($p > 130$ GPa). Newly-predicted phases include those with low…

Materials Science · Physics 2009-10-31 J. B. Neaton , N. W. Ashcroft

First-principles density functional calculations reveal that aluminum can form planar chains in zigzag and ladder structures. The most stable one has equilateral triangular geometry with four nearest neighbors; the other stable zigzag…

Materials Science · Physics 2009-11-07 Prasenjit Sen , S. Ciraci , A. Buldum , Inder P. Batra

Granular aluminum, which consists of nanometer-sized aluminum grains separated by aluminum oxide, is a peculiar superconductor. Its phase diagram as function of normal-state resistivity features a superconducting dome with a maximum…

We found that the conductivity of the two-dimensional electron system in Si-MOS structures is limited to a maximum value, G_{max}, as either density increases or temperature decreases. This value G_{max} is weakly disorder dependent and…

Strongly Correlated Electrons · Physics 2009-10-31 V. M. Pudalov , G. Brunthaler , A. Prinz , G. Bauer

Experiments on a sufficiently disordered two-dimensional (2D) electron system in silicon reveal a new and unexpected kind of metallic behavior, where the conductivity decreases as \sigma (n_s,T)=\sigma (n_s,T=0)+A(n_s)T^2 (n_s-carrier…

Condensed Matter · Physics 2009-10-31 X. G. Feng , Dragana Popovic , S. Washburn , V. Dobrosavljevic

The "metallic" temperature variation of the electrical resistivity of chemical nano gold-silver coatings with a silver content of 6.6 % at. up to 13.1 % at. determined in the temperature range 4.2-300 K. Features of low-temperature…

Intramolecular electron transfer capability of all metal aromatic and anti-aromatic aluminum cluster compounds is studied in terms of density functional theory based global and local reactivity descriptors. This study will provide important…

Soft Condensed Matter · Physics 2007-05-23 D. R. Roy , V. Subramanian , P. K. Chattaraj

Mechanochemically synthesized amorphous 50SISOMO [50AgI-25Ag_2O-25MoO_3] fast ionic conductor shows high ionic conductivity of ~ 6x10^-3 {\Omega}^-1 cm-1 at room temperature. The highest ionic conductivity is achieved for 36 h milled…

Materials Science · Physics 2012-04-10 Saurabh Dayal , K. Shahi

Ordinary superconductors are widely assumed insensitive to small concentrations of random nonmagnetic impurities, whereas strong disorder suppresses superconductivity, ultimately leading to a superconductor-insulator transition. In between…

Superconductivity · Physics 2024-05-24 D. Jones , A. Östlin , A. Weh , F. Beiuseanu , U. Eckern , L. Vitos , L. Chioncel

The low-density limit of the electrical conductivity $\sigma(n,T)$ of hydrogen as the simplest ionic plasma is presented as function of temperature T and mass density n in form of a virial expansion of the resistivity. Quantum statistical…

Plasma Physics · Physics 2021-10-27 Gerd Röpke , Maximilian Schörner , Ronald Redmer , Mandy Bethkenhagen

The density of two-dimensional Ag adatom gases on W(110) is determined by monitoring local electron reflectivity using low energy electron microscopy (LEEM). This method of adatom concentration measurement can detect changes in adatom…

Materials Science · Physics 2007-05-23 J. de la Figuera , N. C. Bartelt , K. F. McCarty