Nonlinear electromagnetic response of bloch electrons in a magnetic field

1968 ◽  
Vol 53 (1) ◽  
pp. 120-135 ◽  
Author(s):  
S. S. Jha ◽  
C. S. Warke
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Response ◽  
Bloch Electrons

Nonlinear electromagnetic response of bloch electrons in a magnetic field

1968 ◽  
Vol 58 (1) ◽  
pp. 93-106 ◽  
Author(s):  
K. C. Rustagi ◽  
C. S. Warke ◽  
S. S. Jha
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Response ◽  
Bloch Electrons

Stochastic Modeling of a High Speed Composite Flywheel for Energy Storage

2018 ◽  
Author(s):  
Matthew E. Riley ◽  
Justin Pettingill
Keyword(s):  
Magnetic Field ◽  
Stochastic Models ◽  
High Speed ◽  
Experimental Validation ◽  
Electromagnetic Response ◽  
Finite Element Models ◽  
Composite Flywheel ◽  
Optimal Geometry ◽  
Micromechanics Models ◽  
Supporting Materials

This work will demonstrate the development and experimental validation of the stochastic models to predict the composite material’s mechanical and electromagnetic response as a function of the constituent reinforcing materials. First, stochastic micromechanics models will be developed for the case of multiple disparate supporting materials. These micromechanics models will then be validated against traditional finite element models and experimental results over the feasible parameter space. The developed models will then be utilized to define the optimal geometry of the composite flywheel including constraints such as displacement, stress, flux, magnetic field density, and manufacturability.

scholarly journals The Symmetry of Pairing and The Electromagnetic Properties of A Superconductor with A Four-Fermion Attraction at Zero Temperature

Symmetry ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1358
Author(s):  
Przemyslaw Tarasewicz
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Pairing Symmetry ◽  
Electromagnetic Properties ◽  
Electromagnetic Response ◽  
Cooper Pairs ◽  
Zero Temperature ◽  
Fermion System ◽  
Phonon Field ◽  
The One

Properties of a fermion system at zero temperature are investigated. The physical system is described by a Hamiltonian containing the BCS interaction and an attractive four-fermion interaction. The four-fermion potential is caused by attractions between Cooper pairs mediated by the phonon field. In this paper, the BCS interaction is assumed to be negligible and the four-fermion potential is the only one that acts in the system. The effect of the pairing symmetry used in the four-fermion potential on some zero-temperature properties is studied. This especially concerns the electromagnetic response of the system to an external magnetic field. It turns out that, in this instance, there are serious differences between the conventional BCS system and the one investigated in this paper.

TRANSIENT ELECTROMAGNETIC RESPONSE OF AN INHOMOGENEOUS CONDUCTING SPHERE

Geophysics ◽  
1970 ◽  
Vol 35 (2) ◽  
pp. 331-336 ◽  
Author(s):  
Saurabh K. Verma ◽  
Rishi Narain Singh
Keyword(s):  
Magnetic Field ◽  
Rise Time ◽  
Mineral Deposits ◽  
Electromagnetic Response ◽  
Radial Coordinate ◽  
Induced Magnetic Field ◽  
Transient Electromagnetic ◽  
Unit Step ◽  
Analytic Expressions ◽  
The Magnetic Field

Analytic expressions for the quasi‐static electromagnetic response of a sphere in presence of unit‐step and ramp‐type time varying magnetic fields are derived. The conductivity inside the sphere is assumed to vary linearly with radius, i.e. [Formula: see text], where ρ is radial coordinate, [Formula: see text] is a constant and a is the radius of sphere. Curves showing the decay of the magnetic field for both types of fields are presented. In the case of ramp‐type applied magnetic field, the magnitudes of maxima of the induced magnetic field are found to decrease with increase in the rise time of the applied field and, hence, exciting pulses having small values of rise time should be used. It is believed that the analysis will be useful in the geoelectric exploration for highly conducting mineral deposits.

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