An experimental investigation of electrial, optical properties of DMS under external magnetic field

2018 ◽  
Author(s):  
Ananya Banerjee ◽  
A. Sarkar
Keyword(s):  
Magnetic Field ◽  
Experimental Investigation ◽  
Optical Properties ◽  
External Magnetic Field

Metamaterials from Amorphous Ferromagnetic Microwires: Interaction between Microwires

2009 ◽  
Vol 152-153 ◽  
pp. 357-360 ◽  
Author(s):  
Andrei V. Ivanov ◽  
A.N. Shalygin ◽  
V.Yu. Galkin ◽  
A.V. Vedyayev ◽  
V.A. Ivanov
Keyword(s):  
Magnetic Field ◽  
Refractive Index ◽  
Optical Properties ◽  
External Magnetic Field ◽  
Electromagnetic Waves ◽  
Negative Refractive Index ◽  
Magnus Effect ◽  
Amorphous Ferromagnet ◽  
Wide Scale ◽  
Optical Magnus Effect

For inhomogeneous mediums the оptical Magnus effect has been derived. The metamaterials fabricated from amorphous ferromagnet Co-Fe-Cr-B-Si microwires are shown to exhibit a negative refractive index for electromagnetic waves over wide scale of GHz frequencies. Optical properties and optical Magnus effect of such metamaterials are tunable by an external magnetic field.

scholarly journals Effects of an External Magnetic Field on the Interband and Intraband Optical Properties of an Asymmetric Biconvex Lens-Shaped Quantum Dot

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 60
Author(s):  
Mher A. Mkrtchyan ◽  
David B. Hayrapetyan ◽  
Eduard M. Kazaryan ◽  
Hayk A. Sarkisyan ◽  
Maxim Ya. Vinnichenko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
External Magnetic Field ◽  
Quantum Dot ◽  
Harmonic Generation ◽  
Third Harmonic Generation ◽  
Photoluminescence Spectra ◽  
Third Harmonic ◽  
Different Temperatures ◽  
Linear And Nonlinear

The theoretical investigation of interband and intraband transitions in an asymmetric biconvex lens-shaped quantum dot are considered in the presence of an external magnetic field. The selection rules for intraband transitions are obtained. The behaviors of linear and nonlinear absorption and photoluminescence spectra are observed for different temperatures and magnetic field strengths. The second and third harmonic generation coefficients as a function of the photon energy are examined both in the absence and presence of an external magnetic field.

Analytic Aharonov–Bohm rings — Currents readout from Zeeman spectrum

2016 ◽  
Vol 30 (18) ◽  
pp. 1650106 ◽  
Author(s):  
Mufei Xiao ◽  
Armando Reyes-Serrato
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
External Magnetic Field ◽  
Energy Structure ◽  
Persistent Currents ◽  
Quantum Rings ◽  
One Dimensional ◽  
Electron Distributions ◽  
Number Formula ◽  
Aharonov Bohm

This paper reports the work on the development and analysis of a model for quantum rings in which persistent currents are induced by Aharonov–Bohm (AB) or other similar effects. The model is based on a centric and annual potential profile. The time-independent Schrödinger equation including an external magnetic field and an AB flux is analytically solved. The outputs, namely energy dispersion and wavefunctions, are analyzed in detail. It is shown that the rotation quantum number [Formula: see text] is limited to small numbers, especially in weak confinement, and a conceptual proposal is put forward for acquiring the flux and eventually estimating the persistent currents in a Zeeman spectroscopy. The wavefunctions and electron distributions are numerically studied and compared to one-dimensional (1D) quantum well. It is predicated that the model and its solutions, eigen energy structure and analytic wavefunctions, would be a powerful tool for studying various electric and optical properties of quantum rings.

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