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A detailed comparison is presented of the temperature dependence of the conductivity of dilute, strongly interacting electrons in two-dimensional silicon inversion layers in the metallic regime in the presence and in the absence of a…

Strongly Correlated Electrons · Physics 2009-11-10 Yeekin Tsui , S. A. Vitkalov , M. P. Sarachik , T. M. Klapwijk

Magnetization reversal in permanent magnets occurs by the nucleation and expansion of reversed domains. Micromagnetic theory offers the possibility to localize the spots within the complex structure of the magnet where magnetization…

Materials Science · Physics 2018-05-25 J. Fischbacher , A. Kovacs , L. Exl J. Kühnel , E. Mehofer , H. Sepehri-Amin , T. Ohkubo , K. Hono , T. Schrefl

Engineering of magnetic materials for developing better spintronic applications relies on the control of two key parameters: the spin polarization and the Gilbert damping responsible for the spin angular momentum dissipation. Both of them…

There exist a number of experiments/applications where the second dimension of the bore of Bitter magnets is not fully utilized. Using an analytical solution for elliptical bore coils, we show that reducing one of the dimensions of the bore…

Accelerator Physics · Physics 2016-07-19 A. Akhmeteli , A. V. Gavrilin

The distribution of the current density and the profile of the trapped magnetic field of a superconducting disk magnetized by uniform field are calculated from first principles. The effect of the superconducting parameters is taken into…

Superconductivity · Physics 2007-05-23 C Li , J J Wang , C Y He , L F Meng , R s Han , Z X Gao

Here, we present numerical simulations of magnetic flux buoyantly rising from a granular convection zone into the low corona. We study the complex interaction of the magnetic field with the turbulent plasma. The model includes the radiative…

Space Physics · Physics 2015-05-18 Fang Fang , Ward Manchester , William P. Abbett , Bart van der Holst

The density of states of the two-dimensional fermionic Hubbard model in the perpendicular homogeneous magnetic field is calculated using the strong coupling diagram technique. The density of states at the Fermi level as a function of the…

Strongly Correlated Electrons · Physics 2019-05-29 A. Sherman

The magnet system is one of the key elements of a watt balance. For the new watt balance currently under construction at the National Institute of Standards and Technology, a permanent magnet system was chosen. We describe the detailed…

Instrumentation and Detectors · Physics 2014-12-25 Frank Seifert , Alireza Panna , Shisong Li , Bing Han , Leon Chao , Austin Cao , Darine Haddad , Heeju Choi , Lori Haley , Stephan Schlamminger

Primordial magnetic fields in the dark sector can be transferred to magnetic fields in the visible sector due to a gauge kinetic mixing term. We show that the transfer occurs when the evolution of magnetic fields is dominated by dissipation…

High Energy Physics - Phenomenology · Physics 2018-08-08 Kohei Kamada , Yuhsin Tsai , Tanmay Vachaspati

We investigated the magnetic field (H)-dependent optical conductivity spectra of MgB2 thin film in the far-infrared region. The H-dependences can be explained by the increase of normal metallic regions embedded in the superconducting…

Strongly Correlated Electrons · Physics 2009-11-07 H. J. Lee , J. H. Jung , K. W. Kim , M. W. Kim , T. W. Noh , Y. J. Wang , W. N. Kang , Eun-Mi Choi , Hyeong-Jin Kim , Sung-Ik Lee

This paper focuses on the process of magnetic flux generation in ICF implosions. Hot-spots are shown to be dominated by fields generated during stagnation, when the temperature and density gradients are largest. A scaling of hot-spot…

Plasma Physics · Physics 2021-09-22 Christopher Walsh , Dan Clark

Conventional magnetic flux concentrators (MFCs) are typically designed with solid structures, which may not be optimal for applications requiring lightweight design or material efficiency. In this study, we investigate the feasibility of…

Applied Physics · Physics 2025-06-12 Yujun Shi , Xiaoting Feng

Mallinson's idea that some spin textures in planar magnetic structures could produce an enhancement of the magnetic flux on one side of the plane at the expense of the other gave rise to permanent magnet configurations known as Halbach…

Materials Science · Physics 2018-05-09 Miguel A. Marioni , Marcos Penedo , Mirko Baćani , Johannes Schwenk , Hans J. Hug

The super-Planckian features of radiative heat transfer in the near-field are known to depend strongly on both material and geometric design properties. However, the relative importance and interplay of these two facets, and the degree to…

Optics · Physics 2019-01-16 Weiliang Jin , Sean Molesky , Zin Lin , Alejandro W. Rodriguez

Owing to the unique features of low Gilbert damping, long spin-diffusion lengths and zero Ohmic losses, magnetic insulators are promising candidate materials for next-generation spintronic applications. However, due to the localized…

Hybrid superconducting/magnetic nanostructures on Si substrates have been built with identical physical dimensions but different magnetic configurations. By constructing arrays based on Co-dots with in-plane, out-of-plane, and vortex state…

Superconductivity · Physics 2019-05-13 A. Gomez , D. A. Gilbert , E. M. Gonzalez , Kai Liu , J. L. Vicent

At high densities fluids of strongly dipolar spherical particles exhibit spontaneous long-ranged orientational order. Typically, due to demagnetization effects induced by the long range of the dipolar interactions, the magnetization…

Soft Condensed Matter · Physics 2009-10-30 B. Groh , S. Dietrich

A current-carrying superconducting strip partly penetrated by magnetic flux and surrounded by a bulk magnet of high permeability is considered. Two types of samples are studied: those with critical current controlled by an edge barrier…

Superconductivity · Physics 2009-10-31 Yu. A. Genenko , A. Snezhko , H. C. Freyhardt

Fluxes of the magnetic helicity density play an important role in large-scale turbulent dynamos, allowing the growth of large-scale magnetic fields while overcoming catastrophic quenching. We show here, analytically, how several important…

Astrophysics of Galaxies · Physics 2023-01-27 Kishore Gopalakrishnan , Kandaswamy Subramanian

A combination of experimental techniques, e.g. vector-MOKE magnetometry, Kerr microscopy and polarized neutron reflectometry, was applied to study the field induced evolution of the magnetization distribution over a periodic pattern of…