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We present an analysis of acoustic phonon propagation through long, free-standing, insulating wires with rough surfaces. Due to a crossover from ballistic propagation of the lowest-frequency phonon mode at $\omega <\omega _{1}=\pi c/W$ to a…

Condensed Matter · Physics 2009-10-31 A. Kambili , G. Fagas , Vladimir I. Fal'ko , C. J. Lambert

Light from any physical source diffracts over space, as spherical wavefronts grow and energy density is spread out. Diffractive effects pose fundamental limits to light-based technologies, including communications, spectroscopy, and…

At the exit surface of a photonic crystal, the intensity of the diffracted wave can be periodically modulated, showing a maximum in the "positive" (forward diffracted) or in the "negative" (diffracted) direction, depending on the slab…

Optics · Physics 2009-11-13 S. Savo , E. Di Gennaro , C. Miletto , A. Andreone , P. Dardano , L. Moretti , V. Mocella

We studied the effect of external pressure on the optical response of the nodal-line semimetal candidate ZrSiTe by reflectivity measurements. At pressures of a few GPa, the reflectivity, optical conductivity, and loss function are strongly…

Materials Science · Physics 2019-07-24 J. Ebad-Allah , M. Krottenmüller , J. Hu , Y. L. Zhu , Z. Q. Mao , C. A. Kuntscher

We studied the diffusion coefficient of hot electrons of GaN crystals in moderate electric (1...10 kV/cm) and magnetic (1...4 T) fields. Two configurations, parallel and crossed fields, are analysed. The study was carried out for…

Materials Science · Physics 2019-04-19 G. I. Syngayivska , V. V. Korotyeyev , V. A. Kochelap

Enhancing the electronic and diffusion properties of lithium-ion batteries is crucial for improving the performance of the fast-growing energy storage devices. Recently, fast-charging capability of commercial-like lithium-ion anodes with…

We present a method for including inelastic scattering in a first-principles density-functional computational scheme for molecular electronics. As an application, we study two geometries of four-atom gold wires corresponding to two…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Thomas Frederiksen , Mads Brandbyge , Nicolas Lorente , Antti-Pekka Jauho

Lead-halide perovskites are promising materials for opto-electronic applications. Recent reports indicated that their mechanical and electronic properties are strongly affected by the lattice vibrations. Herein we report far-infrared…

Significant changes of the relative permittivity of a silver film have been detected using the surface plasmon resonance (SPR) method when a constant electric field is applied to a MDM (metal-dielectric-metal) nanostructure. The structure…

Materials Science · Physics 2012-05-08 B. V. Kryzhanovsky , A. N. Palagushkin , S. A. Prokopenko , A. P. Sergeev , A. O. Melikyan

We present a novel and comprehensive model of 1/f noise in nanoscale graphene devices that accounts for the unusual and so far unexplained experimental characteristics. We find that the noise power spectral density versus carrier…

Mesoscale and Nanoscale Physics · Physics 2013-09-16 Bruno Pellegrini

The effect of microwave irradiation on the phase dynamics of intrinsic Josephson junctions in high temperature superconductors is investigated. We demonstrate the influence of microwave's amplitude variation on the current-voltage…

Superconductivity · Physics 2015-06-11 Mahmoud Gaafar , Yury Shukrinov

Ionization electron diffusion in Liquid Argon Time Projection Chambers (LArTPCs) has typically been considered at the detector design stage, but little attention has been given to its effects on calibration and particle identification. We…

Instrumentation and Detectors · Physics 2022-05-26 A. Lister , M. Stancari

Use of lithium as a surface coating in fusion devices improves plasma performance, but the change in wall properties affects the secondary electron emission properties of the material. Lithium oxidizes easily, which drives the emission…

Plasma Physics · Physics 2025-05-23 Kolter Bradshaw , Ammar Hakim , Bhuvana Srinivasan

Whistler waves are present in solar wind plasma. These waves possess characteristic turbulent fluctuations that are characterized typically by the frequency and length scales that are respectively bigger than ion gyro frequency and smaller…

Space Physics · Physics 2015-05-14 Dastgeer Shaikh , G. P. Zank

Rectification of microwave radiation (20-40 GHz) by a line boundary between two two-dimensional metals on a silicon surface was observed and investigated at different temperatures, in-plane magnetic fields and microwave powers. The…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 I. Hoxha , S. A. Vitkalov , N. A. Zimbovskaya , M. P. Sarachik , T. M. Klapwijk

Fluctuating electric fields emanating from surfaces are a primary source of decoherence in trapped ion qubits. Here, we show that superradiant phonon-induced excitation exchange between adatoms can lead to a reduction of electric field…

Quantum Physics · Physics 2022-01-17 P N Thomas Lloyd , Valentin Walther , Hossein Sadeghpour

The angular and frequency correlation functions of the transmission coefficient for light propagation through a strongly scattering amplifying medium are considered. It is found that just as in the case of an elastic scattering medium the…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 A. A. Burkov , A. Yu. Zyuzin

We present results from RXTE data obtained during a systematic monitoring program of four Seyfert galaxies (NGC5548, NGC5506, MCG-6-30-15 and NGC4051). We studied the variability of three hardness ratios derived from the light curves in…

Astrophysics · Physics 2009-11-07 I. E. Papadakis , P. O. Petrucci , L. Maraschi , I. M. McHardy , P. Uttley , F. Haardt

Transition metal ferromagnetic films with perpendicular magnetic anisotropy (PMA) have ferromagnetic resonance (FMR) linewidths that are one order of magnitude larger than soft magnetic materials, such as pure iron (Fe) and permalloy (NiFe)…

Materials Science · Physics 2009-12-14 J-M. Beaujour , D. Ravelosona , I. Tudosa , E. Fullerton , A. D. Kent

The variance of nonlinear phase noise is analyzed by including the effect of intrachannel cross-phase modulation (IXPM)-induced nonlinear phase noise. Consistent with Ho and Wang [1] but in contrary to the conclusion of both Kumar [2] and…

Optics · Physics 2013-01-15 Keang-Po Ho , Hsi-Cheng Wang
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