Visualization of longitudinal and transverse currents in a Josephson medium by polarized neutrons

G. P. Gordeev; L. A. Akselrod; S. L. Ginzburg; V. N. Zabenkin; I. M. Lazebnik

doi:10.1103/PhysRevB.55.9025

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Visualization of longitudinal and transverse currents in a Josephson medium by polarized neutrons

G. P. Gordeev, L. A. Akselrod, S. L. Ginzburg, V. N. Zabenkin, I. M. Lazebnik

DOI 10.1103/PhysRevB.55.9025 · Physical Review B

T1

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Abstract

The distribution of magnetic induction B in the high-temperature superconducting ceramics Y-Ba-Cu-O in an external magnetic field is studied both theoretically and experimentally using three-dimensional neutron polarization analysis. We demonstrate that the vector B changes both in its value and direction. Transverse and longitudinal currents with respect to the local field direction are evaluated from first principles using Maxwell equations. Various models describing longitudinal and transverse currents are considered and verified experimentally.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown