Publication

Flux flow velocity and resistivity measurements in the intermediate state

Pierre Zweiacker
1975
Journal Articles

Abstract

Reports detailed measurements of flux flow velocity-performed by direct observation with the magneto-optical technique-and electrical resistance in high purity polycrystalline rectangular lead and indium plates subjected to a transverse magnetic field Ha. The measurements illustrated flux flow resistance in the intermediate state and tested the basic flux flow concept governed by the following relations between the average electric field in the superconductor E, the velocity of the magnetic structure v, and the driving current density j: v=(c/xnHc)E, E=xnρj, where xn is the normal phase concentration and ρ the electrical resistivity of the normal metal

Official source

https://infoscience.epfl.ch/entities/publication/57812165-fcb5-4460-835b-e0bc5b5f3cd2

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Pierre Zweiacker
1975
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/57812165-fcb5-4460-835b-e0bc5b5f3cd2

About this result

Related concepts (32)

Electrical resistivity and conductivity

Electrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity indicates a material that readily allows electric current. Resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is the ohm-metre (Ω⋅m).

Electrical resistance and conductance

The electrical resistance of an object is a measure of its opposition to the flow of electric current. Its reciprocal quantity is , measuring the ease with which an electric current passes. Electrical resistance shares some conceptual parallels with mechanical friction. The SI unit of electrical resistance is the ohm (Ω), while electrical conductance is measured in siemens (S) (formerly called the 'mho' and then represented by ℧). The resistance of an object depends in large part on the material it is made of.

Magnetic field

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field. A permanent magnet's magnetic field pulls on ferromagnetic materials such as iron, and attracts or repels other magnets.

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Flux flow velocity and resistivity measurements in the intermediate state

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