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We present a simple but powerful method to determine the thicknesses of the accumulation and depletion layers and the distribution curve of injected carriers in organic field effect transistors. The conductivity of organic semiconductors in…

We present observations of the insulator-superconductor transition in ultrathin films of Bi on solid xenon condensed on quartz and on Ge on quartz. The relative permeability $\epsilon_{r}$ ranges from 1.5 for Xe to 15 for Ge. Though we find…

超导电性 · 物理学 2009-11-07 K. Das Gupta , Swati S. Soman , G. Sambandamurthy , N. Chandrasekhar

Copper nanolines fabricated by the damascene process are commonly used as interconnects in advanced electronic devices. The copper resistivity increases above the bulk value because of confinement, in detriment of performance. Recent…

介观与纳米尺度物理 · 物理学 2009-06-23 T. E. Huber , P. Trottman , J. B. Halpern

Influence of the prolonged irradiation by fission products of 252Cf radionuclide on the operational parameters of silicon-lithium Si(Li) p-i-n detectors, Si surface barrier detectors and Si planar p+n detector was investigated. The obtained…

We investigate quantum fluctuations in thin superconducting wires. We demonstrate that quantum phase slips dominate the system behavior at low temperatures and are well in the measurable range for sufficiently thin wires. We discuss the…

介观与纳米尺度物理 · 物理学 2007-05-23 A. D. Zaikin , D. S. Golubev , A. van Otterlo , G. T. Zimanyi

We revisit the fundamental problem of liquid-liquid dewetting and perform a detailed comparison of theoretical predictions based on thin-film models with experimental measurements obtained by atomic force microscopy (AFM). Specifically, we…

流体动力学 · 物理学 2017-12-27 Dirk Peschka , Stefan Bommer , Sebastian Jachalski , Ralf Seemann , Barbara Wagner

During the intercalation of lithium in layered host materials such as graphite, lithium atoms can move within the plane between two neighboring graphene sheets, but cannot cross the sheets. Repulsive interactions between atoms in different…

材料科学 · 物理学 2024-09-06 Antoine Cordoba , Marion Chandesris , Mathis Plapp

Power semiconductor device architectures require the inclusion of a diffusion barrier to suppress, or at best prevent the interdiffusion between the copper metallisation interconnects and the surrounding silicon substructure. The binary…

We propose a theoretical approach to describe quantitatively the heating process in aqueous solutions of dispersed TiN nanoparticles under solar illumination. The temperature gradients of solution with different concentrations of TiN…

To increase the storage time of ultracold neutrons (UCN) inside the material traps it is promising to cover the trap walls by liquid 4He, the material which does not absorb neutrons at all. A rough side wall of UCN trap holds the required…

仪器与探测器 · 物理学 2023-08-30 Pavel D. Grigoriev , Arseniy V. Sadovnikov , Vladislav D. Kochev , Alexander M. Dyugaev

We consider the fluctuation-induced (Casimir) pressure in peptide films deposited on GaAs, Ge, and ZnS substrates which are either in dielectric or metallic state. Calculations of the Casimir pressure are performed in the framework of…

介观与纳米尺度物理 · 物理学 2022-12-15 Galina L. Klimchitskaya , Vladimir M. Mostepanenko , Oleg Yu. Tsybin

We show that thin dielectric films can be used to enhance the performance of passive atomic mirrors by enabling quantum reflection probabilities of over 90% for atoms incident at velocities ~1 mm/s, achieved in recent experiments. This…

量子气体 · 物理学 2015-05-28 T. E. Judd , R. G. Scott , A. M. Martin , B. Kaczmarek , T. M. Fromhold

We study a hybrid device defined in an InAs nanowire with an epitaxial Al shell that consists of a quantum dot in contact with a superconducting island. The device is electrically floating, prohibiting transport measurements, but providing…

Superconducting thin films with high intrinsic kinetic inductance are of great importance for photon detectors, achieving strong coupling in hybrid systems, and protected qubits. We report on the performance of titanium nitride resonators,…

介观与纳米尺度物理 · 物理学 2018-12-05 A. Shearrow , G. Koolstra , S. J. Whiteley , N. Earnest , P. S. Barry , F. J. Heremans , D. D. Awschalom , E. Shirokoff , D. I. Schuster

The effect of moderate cooling on CdZnTe semiconductor detectors has been studied for the COBRA experiment. Improvements in energy resolution and low energy threshold were observed and quantified as a function of temperature. Leakage…

仪器与探测器 · 物理学 2009-02-02 J. V. Dawson , C. Montag , C. Reeve , J. R. Wilson , K. Zuber

We study the electrode polarization behaviour of different Na-Ca-phosphosilicate glasses by measuring the differential capacitance between blocking Pt electrodes. At low applied dc bias voltages, we detect a linear capacitance regime with…

无序系统与神经网络 · 物理学 2009-11-11 C. R. Mariappan , T. P. Heins , B. Roling

We use optical pump--THz probe spectroscopy at low temperatures to study the hot carrier response in thin Bi$_2$Se$_3$ films of several thicknesses, allowing us to separate the bulk from the surface transient response. We find that for…

介观与纳米尺度物理 · 物理学 2015-06-23 R. Valdés Aguilar , J. Qi , M. Brahlek , N. Bansal , A. Azad , J. Bowlan , S. Oh , A. J. Taylor , R. P. Prasankumar , D. A. Yarotski

The need for high-temperature piezoelectric microelectromechanical systems (MEMS) requires pushing piezoelectric platforms to their thermal limits. In harsh thermal environments, piezoelectric MEMS devices are expected to sustain severe…

We have developed a method to probe the temperature of surface state electrons (SSE) above a superfluid Helium-4 surface using the Seebeck effect. In contrast to previously used SSE thermometry, this technique does not require detailed…

介观与纳米尺度物理 · 物理学 2018-12-12 Ethan I. Kleinbaum , Stephen A. Lyon

We have measured the resistance vs. temperature of more than 20 superconducting nanowires with nominal widths ranging from 10 to 22 nm and lengths from 100 nm to 1050 nm. With decreasing cross-sectional areas, the wires display increasingly…

超导电性 · 物理学 2009-11-07 C. N. Lau , N. Markovic , M. Bockrath , A. Bezryadin , M. Tinkham