Longitudinal current dissipation in Bose-glass superconductors
David R. Nelson, Leo Radzihovsky
DOI 10.1103/PhysRevB.54.R6845 · Physical Review B
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Abstract
A scaling theory of vortex motion in Bose-glass superconductors with currents parallel to the common direction of the magnetic field and columnar defects is presented. Above the Bose-glass transition, the longitudinal dc resistivity ρ∥(T)∼(T−TBG)ν′z′ vanishes much faster than the corresponding transverse resistivity ρ⊥(T)∼(T−TBG)ν′(z′−2), thus reversing the usual anisotropy of electrical transport in the normal state of layered superconductors. In the presence of a current J at an angle θJ with the common field and columnar defect axis, the electric field angle θE approaches π2 as T→TBG+ Scaling also predicts the behavior of penetration depths for the ac currents as T→TBG− and implies a jump discontinuity at TBG in the superfluid density describing transport parallel to the columns.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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