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Measurements of resistance vs. temperature have been carried out on a sequence of quench-condensed ultrathin films of amorphous bismuth (a-Bi). The resistance below about 0.1K was found to be temperature independent in a range of films with…

Superconductivity · Physics 2007-05-23 L. M. Hernandez , Kevin A. Parendo , A. M. Goldman

The transparent semiconductor In$_{2}$O$_{3}$ is a technologically important material. It combines optical transparency in the visible frequency range and sizeable electric conductivity. We present a study of thermal conductivity of…

Materials Science · Physics 2021-01-20 Liangcai Xu , Benoit Fauqué , Zengwei Zhu , Zbigniew Galazka , Klaus Irmscher , Kamran Behnia

Thin films of $ \beta- $tungsten host superconductivity in the presence of strong spin-orbit coupling. This non-equilibrium crystalline phase of tungsten has attracted considerable attention in recent years due to its giant spin Hall effect…

Superconductivity · Physics 2022-03-03 Prashant Chauhan , Ramesh Budhani , N. P. Armitage

Silicon nanocrystals (Si NCs) have shown great promise for electroluminescent and photoluminescent applications. In order to optimize the properties of Si NC devices, however, electronic transport in Si NCs films needs to be thoroughly…

Mesoscale and Nanoscale Physics · Physics 2014-09-02 Ting Chen , Brian Skinner , Wei Xie , B. I. Shklovskii , Uwe R. Kortshagen

The electrical conductivity of the switching channel of vanadium dioxide thin-film sandwich structures is studied over a wide temperature range (15-300 K). It is shown that the electrical resistance of the channel varies with temperature as…

Materials Science · Physics 2020-01-10 Alexander Pergament , Petr Boriskov , Nikolai Kuldin , Andrei Velichko

We investigate the electrical transport in mesoscopic structures of La$_{0.67}$Ca$_{0.33}$MnO$_3$ in the regime of the metal-insulator transition by fabricating microbridges from strained and unstrained thin films. We measure…

Strongly Correlated Electrons · Physics 2015-05-19 C. Beekman , J. Zaanen , J. Aarts

We investigate the insulating phase that forms in a titanium nitride film in a close vicinity of the disorder-driven superconductor-insulator transition. In zero magnetic field the temperature dependence of the resistance reveals a sequence…

Superconductivity · Physics 2009-02-02 T. I. Baturina , A. Yu. Mironov , V. M. Vinokur , M. R. Baklanov , C. Strunk

We consider interaction effects in a granular normal metal at not very low temperatures. Assuming that all weak localization effects are suppressed by the temperature we replace the initial Hamiltonian by a proper functional of phases and…

Disordered Systems and Neural Networks · Physics 2009-11-07 K. B. Efetov , A. Tschersich

We have varied the disorder in a two-dimensional electron system in silicon by applying substrate bias. When the disorder becomes sufficiently low, we observe the emergence of the metallic phase, and find evidence for a metal-insulator…

Strongly Correlated Electrons · Physics 2009-10-30 Dragana Popovic , A. B. Fowler , S. Washburn

We present the results of an experimental study of superconducting, disordered, thin-films of amorphous Indium Oxide. These films can be driven from the superconducting phase to a reentrant insulating state by the application of a…

Superconductivity · Physics 2009-11-10 G. Sambandamurthy , L. W. Engel , A. Johansson , D. Shahar

Temperature- and magnetic-field dependent measurements of the resistance of ultrathin superconducting TiN films are presented. The analysis of the temperature dependence of the zero field resistance indicates an underlying insulating…

Superconductivity · Physics 2009-11-10 T. I. Baturina , D. R. Islamov , J. Bentner , C. Strunk , M. R. Baklanov , A. Satta

The complex conductivity of a MgB2 film has been investigated in the frequency range 4 cm^{-1}< nu < 30 cm^{-1} and for temperatures 2.7 K < T <300 K. The overall temperature dependence of both components of the complex conductivity is…

Superconductivity · Physics 2009-11-07 A. V. Pronin , A. Pimenov , A. Loidl , S. I. Krasnosvobodtsev

We have calculated the temperature dependence of the conductance variation ($\delta S(T)$) of mesoscopic superconductor normal metal(S/N) structures, in the diffusive regime, analysing both weak and strong proximity effects. We show that in…

Superconductivity · Physics 2009-10-31 R. Seviour , C. J. Lambert , A. F. Volkov

We investigate electron transport and phase-breaking processes in thin titanium nitride (TiN) films of epitaxial quality. Previous studies show that a minute surface magnetic disorder significantly reduces the critical temperature…

The thermal conductivity (k) of polycrystalline silicon carbide thin films is relevant for thermal management in emerging silicon carbide applications like MEMS and optoelectronic devices. In such films k can be substantially reduced by…

Materials Science · Physics 2023-06-09 Lei Tang , Chris Dames

Amorphous molybdenum silicide compounds have attracted significant interest for potential device applications, particularly in single-photon detector. In this work, the temperature-dependent resistance and magneto-resistance behaviors were…

Applied Physics · Physics 2020-10-23 Zhengyuan Liu , Bingcheng Luo , Junbiao Hu , Cheng Xing

This letter reports thermopower and conductivity measurements through the metal-insulator transition for 2-dimensional electron gases in high mobility Si-MOSFET's. At low temperatures both thermopower and conductivity show critical behavior…

Disordered Systems and Neural Networks · Physics 2007-05-23 R. Fletcher , V. M. Pudalov , A. D. B. Radcliffe , C. Possanzini

We investigated the thermal transport properties of two $\alpha$-RuCl$_3$ crystals with different degrees of stacking disorder to understand the origin of the previously reported oscillatory feature in the field dependence of thermal…

Materials Science · Physics 2024-01-17 Heda Zhang , Andrew May , Hu Miao , Brian Sales , David Mandrus , Stephen Nagler , Michael McGuire , Jiaqiang Yan

The Hall conductivity and resistivity of strongly localized electrons at low temperatures and at small magnetic fields are obtained. It is found that the results depend on whether the conductivity or the resistivity tensors are averaged to…

Condensed Matter · Physics 2009-10-28 O. Entin-Wohlman , A. G. Aronov , Y. Levinson , Y. Imry

This paper addresses the effect of disorder on the carrier transport mechanism of atomic layer deposited ZnO thin films as has been investigated by temperature dependent electrical resistivity measurements in the temperature range of 4.2K…

Materials Science · Physics 2013-01-08 D. Saha , Amit. K. Das , R. S. Ajimsha , P. Misra , L. M. Kukreja
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