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We argue that claims about magnetic field dependence of the magnetic field penetration depth lambda, which were made on the basis of moun-spin-rotation studies of some superconductors, originate from insufficient accuracy of theoretical…

Superconductivity · Physics 2009-11-13 I. L. Landau , H. Keller

In the present work, with the help of fully 3-D smooth particle magnetohydodynamic (SPMHD) simulations, we explore the nonlinear effects of magnetic fields (in close equipartition with the gas) in the structure of radiatively cooling,…

Astrophysics · Physics 2007-05-23 Elisabete M. de Gouveia Dal Pino , Adriano H. Cerqueira

We consider magnetic field screening and spontaneous magnetic fields in $s+is$ and $s+id$ superconductors both analytically and numerically. We show that in general, the linearized model couples the moduli of order parameters to the…

Superconductivity · Physics 2021-12-08 Martin Speight , Thomas Winyard , Alex Wormald , Egor Babaev

During the last decade it has become evident that the magnetorotational instability is at the heart of the enhanced angular momentum transport in weakly magnetized accretion disks around neutron stars and black holes. In this paper, we…

Astrophysics · Physics 2009-11-10 Martin E. Pessah , Dimitrios Psaltis

The recent theoretical study on the multilayer-coating model published in Applied Physics Letters [1] is reviewed. Magnetic-field attenuation behavior in a multilayer coating model is different from a semi-infinite superconductor and a…

Accelerator Physics · Physics 2015-02-25 Takayuki Kubo , Yoshihisa Iwashita , Takayuki Saeki

In a composite superconductor in uniform rotation, the London field strength at equilibrium is given by the usual expression B_L = 2m Omega/e; here m corresponds to the bare electron mass, although the effective mass m* can be different in…

Superconductivity · Physics 2007-05-23 G. Modanese

A multilayered structure with a single superconductor layer and a single insulator layer formed on a bulk superconductor is studied. General formulae for the vortex-penetration field of the superconductor layer and the magnetic field on the…

Accelerator Physics · Physics 2014-01-30 Takayuki Kubo , Yoshihisa Iwashita , Takayuki Saeki

The effect of smooth inhomogeneities near a superconductor boundary on the magnetic penetration depth $\lambda$ is studied with emphasis on the proximity-induced spatial dependence of the Cooper pair amplitude. The influence of surface pair…

Superconductivity · Physics 2014-01-08 Yu. S. Barash

We study the existence of scalar fields outside neutral reflecting shells. We consider static massive scalar fields non-minimally coupled to the Gauss-Bonnet invariant. We analytically investigated properties of scalar fields through the…

General Relativity and Quantum Cosmology · Physics 2023-03-01 Yan Peng

We give theoretical analyses of the Magneto-Rayleigh-Taylor instability driven by a rotating magnetic field. Both slab and liner configurations with finite thicknesses are dealt with in the WKB and the non-WKB approximations. Results show…

Plasma Physics · Physics 2018-04-18 Shu-Chao Duan

A scheme suggested in the literature to determine the symmetry-imposed shape of linear response tensors is revised and extended to allow for the treatment of more complex situations. The extended scheme is applied to discuss the shape of…

Materials Science · Physics 2015-10-28 Marten Seemann , Diemo Ködderitzsch , Sebastian Wimmer , Hubert Ebert

We introduce a simple approach to evaluate the magnetic field distribution around superconducting samples, based on the London equations; the elementary variable is the vector potential. This procedure has no adjustable parameters, only the…

Superconductivity · Physics 2015-06-16 J. -G. Caputo , L. Gozzelino , F. Laviano , G. Ghigo , R. Gerbaldo , J. Noudem , Y. Thimont , P. Bernstein

We derive the current response to the linearly polarized electromagnetic field with finite frequency and wave vector incident normally on the specular surface of a clean nonconventional superconductor with orbital spontaneous magnetization…

Superconductivity · Physics 2009-11-13 V. P. Mineev

We consider a gas composed of a single family of standard model leptons which are approximately massless and trapped inside a charged rotating shell. Due to the magnetic vortical effect, the leptons gain momentum in the direction of the…

High Energy Physics - Theory · Physics 2018-05-15 Evgeny Shaverin

This paper presents the effects of Lorentz violation in superconductivity. Constructing a Lorentz-Violating Ginzburg-Landau theory of superconductivity we discuss the influence of the Lorentz-Violating tensors $\hat{k}_{c}^{ij}$ and…

Superconductivity · Physics 2022-03-04 J. Furtado , R. M. M. Costa Filho , A. F. Morais , I. C. Jardim

Pulsar electrodynamics has been built up by taking ingredients from two models, the vacuum-dipole model, which ignores the magnetosphere but includes the inductive electric field due to the obliquely rotating magnetic dipole, and the…

Solar and Stellar Astrophysics · Physics 2015-05-28 D. B. Melrose , Rai Yuen

The distribution of magnetic induction in Meissner state with finite London penetration depth is analyzed for platelet samples of rectangular cross-section in a perpendicular magnetic field. The exact 2D numerical solution of the London…

Superconductivity · Physics 2009-10-31 R. Prozorov , R. W. Giannetta , A. Carrington , F. M. Araujo-Moreira

Evidence that the magnetic fields of extragalactic jets have a significant fraction of their energy in a random component is briefly summarized, and a detailed model of evolving, jet polarization structures is constructed, based on this…

Astrophysics · Physics 2009-11-10 Philip A. Hughes

This paper presents the effects of non-minimal Lorentz-violation operators in superconductivity. By constructing a Lorentz-Violating Ginzburg-Landau theory of superconductivity with a five-dimensional operator, we discuss the influence of…

High Energy Physics - Theory · Physics 2024-07-08 M. C. Araújo , I. C. Jardim , D. F. S. Veras , J. Furtado

The London penetration depth $\lambda$ is the basic length scale for electromagnetic behavior in a superconductor. Precise measurements of $\lambda$ as a function of temperature, field, and impurity scattering have been instrumental in…

Superconductivity · Physics 2022-01-10 Russell Giannetta , Antony Carrington , Ruslan Prozorov