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The polarimetric measurement on the prompt phase of GRB 100826A shows that the polarization angle changes $\sim 90^{\circ}$ between two adjacent time intervals. We will show that this phenomenon can be naturally interpreted in the framework…

High Energy Astrophysical Phenomena · Physics 2014-11-07 Zhe Chang , Hai-Nan Lin

The phase diagram of the Kondo lattice Hamiltonian with ferromagnetic Hund's coupling in the limit where the spin of the localized $t_{2g}$ electrons is classical is analyzed in one dimension as a function of temperature, electronic…

Strongly Correlated Electrons · Physics 2009-10-30 Seiji Yunoki , Adriana Moreo

Spatially indirect Type-II band alignment in magnetically-doped quantum dot (QD) structures provides unexplored opportunities to control the magnetic interaction between carrier wavefunction in the QD and magnetic impurities. Unlike the…

Mesoscale and Nanoscale Physics · Physics 2018-01-17 P. Zhang , T. Norden , J. M. Pientka , R. Oszwałdowski , A. Najafi , B. Barman , Y. Tsai , W-C. Fan , W-C. Chou , J. E. Han , I. Žutić , B. D. McCombe , A. Petrou

We present the first radio emission simulations from high resolution three dimensional relativistic hydrodynamic jets, which allow for a study of the observational implications of the interaction between the jet and external medium. This…

In multiferroic TbMn$_2$O$_5$, the behavior of the terbium ions forms a crucial part of the magneto-electric coupling. The result is a magnetically induced reversal of the electric polarization at 2 T. In this article we present the first…

Strongly Correlated Electrons · Physics 2011-06-27 R. D. Johnson , C. Mazzoli , S. R. Bland , C-H. Du , P. D. Hatton

The theory of the orbital Hall effect (OHE), a transverse flow of orbital angular momentum in response to an electric field, has concentrated overwhelmingly on intrinsic mechanisms. Here, using a quantum kinetic formulation, we determine…

Mesoscale and Nanoscale Physics · Physics 2024-05-02 Hong Liu , Dimitrie Culcer

Two-dimensional metallic altermagnets are rare, and no correlated 2D material has been established to host large nonrelativistic spin splitting. Here we show that spontaneous orbital order, driven by electronic correlations and Fermi…

Mesoscale and Nanoscale Physics · Physics 2026-03-27 Nirmalya Jana , Atasi Chakraborty , Anamitra Mukherjee , Amit Agarwal

Geometrical frustration of the Fe ions in LuFe2O4 leads to intricate charge and magnetic order and a strong magnetoelectric coupling. Using resonant x-ray diffraction at the Fe K edge, the anomalous scattering factors of both Fe sites are…

Strongly Correlated Electrons · Physics 2015-05-13 A. M. Mulders , S. M. Lawrence , U. Staub , M. Garcia-Fernandez , V. Scagnoli , C. Mazzoli , E. Pomjakushina , K. Conder , Y. Wang

The magnetoresistance of a low carrier density, disordered GaAs based two-dimensional (2D) electron gas has been measured in parallel magnetic fields up to 32 T. The feature in the resistance associated with the complete spin polarization…

Mesoscale and Nanoscale Physics · Physics 2009-11-09 B. A. Piot , D. K. Maude , U. Gennser , A. Cavanna , D. Mailly

An in-depth analysis of valley physics in 2D materials like transition metal dichalcogenides requires the measurement of many material properties as a function of Fermi level position within the electronic band structure. This is normally…

Mesoscale and Nanoscale Physics · Physics 2020-07-31 F. Volmer , M. Ersfeld , L. Rathmann , M. Heithoff , L. Kotewitz , K. Watanabe , T. Taniguchi , C. Stampfer , B. Beschoten

The effect of a tilted dc magnetic field on the transport properties of a two dimensional electron gas (2DEG) is studied. The influence of the component of magnetic field parallel to the surface is analyzed and the dependence of the Fermi…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. C. A. Ramos , G. A. Farias , R. N. Costa Filho , N. S. Almeida

In multiferroic oxides with a transverse helical magnetic order, the magnetization exchange coupling is sinusoidally space-dependent. We theoretically investigate the spin-dependent electron grating effect in…

Mesoscale and Nanoscale Physics · Physics 2012-04-30 Rui Zhu

The electrical resistivity for a current moving perpendicular to layers (chains) in quasi-2D (quasi-1D) metals under an applied magnetic field of varying orientation is studied using Boltzmann transport theory. We consider the simplest…

Statistical Mechanics · Physics 2009-11-13 M. F. Smith , Ross McKenzie

We measure the thermodynamic magnetization of a low-disordered, strongly correlated two-dimensional electron system in silicon in perpendicular magnetic fields. A new, parameter-free method is used to directly determine the spectrum…

Strongly Correlated Electrons · Physics 2007-05-23 S. Anissimova , A. Venkatesan , A. A. Shashkin , M. R. Sakr , S. V. Kravchenko , T. M. Klapwijk

The intrinsic spin-orbit coupling in the 2D staggered monolayer semiconductors is very large as compared to graphene. The large spin orbit interaction in these materials leads to the opening of a gap in the energy spectrum and…

Mesoscale and Nanoscale Physics · Physics 2019-12-24 Muzamil Shah , Muahmmad Sabieh Anwar

We have experimentally studied the non-equilibrium transport in low-density clean 2D electron systems at mesoscopic length scales. At zero magnetic field (B), a double-peak structure in the non-linear conductance was observed close to the…

Strongly Correlated Electrons · Physics 2009-11-10 A. Ghosh , C. J. B. Ford , M. Pepper , H. E. Beere , D. A. Ritchie

In this paper, we investigate theoretically the spin-orbit torque as well as the Gilbert damping for a two band model of a 2D helical surface state with a Ferromagnetic (FM) exchange coupling. We decompose the density matrix into the Fermi…

Mesoscale and Nanoscale Physics · Physics 2016-08-16 Farzad Mahfouzi , Nicholas Kioussis

We report an unconventional temperature dependence of the resistivity in several strongly correlated systems approaching a localized to itinerant electronic transition from the itinerant electron side. The observed resistivity, proportioanl…

Strongly Correlated Electrons · Physics 2009-11-10 F. Rivadulla , J. -S. Zhou , J. B. Goodenough

We investigate the ionization dynamics of atoms irradiated by an intense laser field using a semiclassical model that includes magnetic Lorentz force in the rescattering process. We find that, the electrons tunneled with different initial…

Atomic Physics · Physics 2017-01-25 J. F. Tao , Q. Z. Xia , J. Cai , L. B. Fu , J. Liu

The conductivity of a two-dimensional electron gas in a parallel magnetic field is calculated. We take into account the magnetic field induced spin-splitting, which changes the density of states, the Fermi momentum and the screening…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 V. T. Dolgopolov , A. Gold
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