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200 papers

The effect of a perpendicular magnetic field on the quantized current induced by a surface acoustic wave in a quasi-1D channel is studied. The channel has been produced experimentally in a GaAs heterostructure by shallow etching techniques…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Natalya A. Zimbovskaya , Godfrey Gumbs

We studied the polarization behavior of the quasar 3C 273 over the 1 mm wavelength band at ALMA with a total bandwidth of 7.5GHz across 223 to 243 GHz at 0.8 arcsec resolution, corresponding to 2.1 kpc at the distance of 3C 273. With these…

Astrophysics of Galaxies · Physics 2019-03-13 T. Hovatta , S. O'Sullivan , I. Martí-Vidal , T. Savolainen , A. Tchekhovskoy

The single electron magnetotransport in a vertical bi-layer semiconductor nanowire made of InAlAs/InGaAs and AlGaAs/GaAs heterostructure is theoretically studied. The magnetic field is directed perpendicularily to the main (transport) axis…

Mesoscale and Nanoscale Physics · Physics 2016-08-24 T. Chwiej

We study the propagation of gravitational waves in a collisionless plasma with an external magnetic field parallel to the direction of propagation. Due to resonant interaction with the plasma particles the gravitational wave experiences…

General Relativity and Quantum Cosmology · Physics 2010-11-19 Martin Servin , Gert Brodin , Mattias Marklund

We present two-dimensional simulations of wave propagation in a realistic, non-stationary model of the solar atmosphere. This model shows a granular velocity field and magnetic flux concentrations in the intergranular lanes similar to…

Solar and Stellar Astrophysics · Physics 2010-09-29 C. Nutto , O. Steiner , M. Roth

Experimental and theoretical evidence is presented for new low-magnetic-field ($B<5$ kG) 1/B-oscillations in the thermoelectric power of a high-mobility GaAs/AlGaAs two-dimensional (2D) electron gas. The oscillations result from…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Jian Zhang , S. K. Lyo , R. R. Du , J. A. Simmons , J. L. Reno

We analyze the magneto-optical conductivity (and related magnitudes like transmittance and Faraday rotation of the irradiated polarized light) of some elemental two-dimensional Dirac materials of group IV (graphene analogues, buckled…

Mesoscale and Nanoscale Physics · Physics 2024-03-20 M. Calixto , A. Mayorgas , N. A. Cordero , E. Romera , O. Castaños

Recently, some fast radio bursts (FRBs) have been reported to exhibit complex and diverse variations in Faraday rotation measurements (RM) and polarization, suggesting that dynamically evolving magnetization environments may surround them.…

High Energy Astrophysical Phenomena · Physics 2023-08-29 Zhao-Yang Xia , Yuan-Pei Yang , Qiao-Chu Li , Fa-Yin Wang , Bo-Yang Liu , Zi-Gao Dai

Nonlinear frequency conversion by optical rectification, as well as difference- and sum-frequency generation are fundamental processes for producing electromagnetic radiation at different frequencies. Here, we demonstrate that coherently…

We present a detailed examination of the relationship between the magnetic field structures and the variations in Faraday Rotation across PKS1246-410, a radio source in the Centaurus cluster of galaxies, using data from Taylor, Fabian and…

Astrophysics · Physics 2009-11-07 L. Rudnick , K. Blundell

We show that a slowly decaying current pulse can lead to nearly deterministic precessional switching in the presence of noise. We consider a biaxial macrospin, with an easy axis in the plane and a hard axis out-of-the plane, typical of thin…

Mesoscale and Nanoscale Physics · Physics 2016-05-18 Daniele Pinna , Colm Ryan , Thomas Ohki , Andrew D. Kent

Magnetic spinels (with chemical formula $AX_{2}$O$_{4}$, with $X$ a 3$d$ transition metal ion) that also have an orbital degeneracy are Jahn-Teller active and hence possess a coupling between spin and lattice degrees of freedom. At high…

Strongly Correlated Electrons · Physics 2017-11-13 T. Weber , B. Roessli , C. Stock , T. Keller , K. Schmalzl , F. Bourdarot , R. Georgii , R. A. Ewings , R. S. Perry , P. Böni

We present simulations of magneto-acoustic wave propagation in a magnetic, plane-parallel stratified solar model atmosphere, employing the CO5BOLD-code. The tests are carried out for two models of the solar atmosphere, which are similar to…

Solar and Stellar Astrophysics · Physics 2015-05-20 C. Nutto , O. Steiner , M. Roth

This work presents the results for the Faraday rotation in pure and Cr-doped lead germanate crystals studied in the course of proper ferroelectric phase transition. We show that the increment of the Faraday rotation appearing at the phase…

Materials Science · Physics 2007-06-19 D. Adamenko , I. Klymiv , V. M. Duda , R. Vlokh , O. Vlokh

Radio interferometric observations of Active Galactic Nuclei (AGN) jets reveal the significant linear polarization of their synchrotron radiation that changes with frequency due to the Faraday rotation. It is generally assumed that such…

Astrophysics of Galaxies · Physics 2024-11-06 E. Yushkov , I. N. Pashchenko , D. D. Sokoloff , G. Chumarin

The Faraday Rotation Ammeter (FRA) experiment takes advantage of the Faraday Effect in order to measure the current density in a given environment. The Faraday Effect explains a rotation of a polarized electric field as it propagates…

Physics Education · Physics 2020-01-03 Jason Sisk

The kinetics of conduction electrons interacting with the field of sound waves in a constant magnetic field is studied. It is shown that the longitudinal sound wave propagation occurs transverse spin conductivity, which has a resonant…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 I. I. Lyapilin

Taking advantage of the anomalous Hall effect, we electrically probe low-frequency magnetization fluctuations at room temperature in a thin ferromagnetic Pt/Co/AlO$_x$ layer stack with perpendicular magnetic anisotropy. We observe a strong…

Mesoscale and Nanoscale Physics · Physics 2024-02-29 Nadine Nabben , Giacomo Sala , Ulrich Nowak , Matthias Krüger , Sebastian T. B. Goennenwein

We report low-temperature transport measurements of three-terminal T-shaped device patterned from GaAs/AlGaAs heterostructure. We demonstrate the mode branching and bend resistance effects predicted by numerical modeling for linear…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 J. Wrobel , P. Zagrajek , M. Czapkiewicz , M. Bek , D. Sztenkiel , K. Fronc , R. Hey , K. H. Ploog , B. R. Bulka

The standard formula for the rotation measure, RM, which determines the position angle, $\psi={\rm RM}\lambda^2$, due to Faraday rotation, includes contributions only from the portions of the ray path where the natural modes of the plasma…

Solar and Stellar Astrophysics · Physics 2015-05-20 D. B. Melrose