Current density is the amount ofelectric currentthat flows through a unit value of the cross-sectional area.It is a vector quantity comprising both a direction and scalar magnitude. Current Density is measured in terms ofAmpereper square meter (A/m2). In the case of a steady current, the s...
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Critical Current Density of Formula Not Shown Coated Conductors Under High Compression in High FieldsHiggins, J.S.Hampshire, D.P.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY ASC
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Current Density in Semiconductor: The total current density in a semiconductor is the sum of the current densities due to electrons and holes, each having different mobilities. Relation to Conductivity: Current density (J) is related to conductivity (σ) through the formula J = σE, where E ...
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where τ(k), v(k) and ρ(k)−1 are the relaxation time, velocity and mean local curvature of the Fermi surface at k. This formula shows that, even for the cubic metals, the Hall coefficient can be temperature-dependent through the temperature dependence of τ(k). The sign of local...
Starting from an existing model byClemet al., this paper has analyzed how the current density and magnetic field distribution of a stack of superconducting tapes with ac transport currents or applied fields will change in a full cycle. This paper assumes when the ac current or field starts to...
They derived an analytical formula for the harmonic Hall voltages and found that the effective fields strongly depend on the thicknesses of Ta and CoFeB layers in Ta/CoFeB/MgO heterostructures. For practical use of the SOT in spintronics devices, it is of great importance to elucidate the ...
A formula known as Richardson’s law (first proposed by the English physicist Owen W. Richardson) is roughly valid for all metals. It is usually expressed in terms of the emission current density (J) as in amperes per square metre. The Boltzmann constant k has the value 8.62 × 10−5...