Results 11 to 20 of about 809 (132)

Comparison between optical and electrical data on hole concentration in zinc-doped p-GaAs [PDF]

open access: yesModern Electronic Materials, 2023
The optical and electrical properties of zinc-doped Cz p-GaAs have been studied. Reflection spectra of ten p-GaAs specimens have been taken in the mid-IR region.
Aleksandr G. Belov   +6 more
doaj   +3 more sources

A fast Fourier transform implementation of the Kramers-Kronig relations: Application to anomalous and left handed propagation

open access: yesAIP Advances, 2012
In this this paper we quickly derive the Kramers-Kronig relations from simple causality considerations and propose a simple way to implement them using the Fast Fourier Transform.
Jérôme Lucas   +3 more
doaj   +1 more source

A conformal dispersion relation: correlations from absorption

open access: yesJournal of High Energy Physics, 2020
We introduce the analog of Kramers-Kronig dispersion relations for correlators of four scalar operators in an arbitrary conformal field theory. The correlator is expressed as an integral over its “absorptive part”, defined as a double discontinuity ...
Dean Carmi, Simon Caron-Huot
doaj   +1 more source

Structural, optical and electronic properties of indium sulfide compositions under influence of copper impurity produced by chemical method

open access: yesResults in Physics, 2017
Aqueous solutions with 70 °C and pH = 2.5 constant values were prepared from convenient chemical compounds to produce In2S3: Cu crystals and thin films. Crystal compositions were grown in this solution under special conditions.
Parisa Esmaili   +3 more
doaj   +1 more source

Investigation of structural, electronic, elastic and optical properties of Cd1-x-yZnxHgyTe alloys

open access: yesAIP Advances, 2016
Structural, optical and electronic properties and elastic constants of Cd1-x-yZnx HgyTe alloys have been studied by employing the commercial code Castep based on density functional theory.
M. Tamer
doaj   +1 more source

Splitting Magnitude Response into Real and Imaginary Parts

open access: yesMATEC Web of Conferences, 2017
The determination of real and imaginary parts from magnitude responses is studied for causal linear time-invariant systems having monotonic impulse responses.
Shtrauss Vairis   +2 more
doaj   +1 more source

An alternative response to the off-shell quantum fluctuations: a step forward in resolution of the Casimir puzzle

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
The spatially nonlocal response functions are proposed which nearly coincide with the commonly used local response for electromagnetic fields and fluctuations on the mass shell, but differ significantly for the off-shell fluctuating field.
G. L. Klimchitskaya, V. M. Mostepanenko
doaj   +1 more source

Structural and Optical Coefficients Investigation of γ-Al2O3 Nanoparticles using Kramers-Kronig Relations and Z–scan Technique

open access: yesJournal of Asian Ceramic Societies, 2021
γ-Al2O3 nanoparticles (NPs) with a mean diameter of 60 nm were prepared through the sol–gel technique and characterized by X-ray diffraction, field emission scanning electron microscopy (FESEM), and ultraviolet–visible (UV-Vis) spectroscopy.
A. Faraji Alamouti   +4 more
doaj   +1 more source

On the Applicability of Kramers–Kronig Dispersion Relations to Guided and Surface Waves

open access: yesAcoustics
In unbounded media, the acoustic attenuation as function of frequency is related to the frequency-dependent sound velocity (dispersion) via Kramers–Kronig dispersion relations.
Victor V. Krylov
doaj   +1 more source

Phase response reconstruction for non‐minimum phase systems using frequency‐domain magnitude values

open access: yesIET Science, Measurement & Technology, 2021
It is often more complicated to measure the phase response of a large system than the magnitude. In that case, one can attempt to use the Kramers–Kronig (KK) relations for magnitude and phase, which relates magnitude and phase analytically. The advantage
Taco Boland, Rik Naus, Peter Zwamborn
doaj   +1 more source

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