ELECTRIC FIELD STRUCTURE ON THE SURFACE OF
SUPERCONDUCTING Pb-In SLAB IN LONGITUDINAL MAGNETIC FIELD
Title, author, abstract
- title
-
ELECTRIC FIELD STRUCTURE ON THE SURFACE OF
SUPERCONDUCTING Pb-In SLAB IN LONGITUDINAL MAGNETIC FIELD
- authors
-
A. Shimogawa, N. Morita, E. S. Otabe T.
Matsushita
Department of Computer Science and Electronics, Kyushu
Institute of Technology,
680--4 Kawazu, Iizuka, 820 JAPAN
- abstract
-
The structure of electric field on the surface of
superconducting Pb-In slab samples was measured under the
longitudinal magnetic field. A region with a negative
electric field was observed as well as in a cylindrical
sample. However, the obtained structure was different from
the helical one observed by Ezaki and Irie for a cylindrical
sample. The negative electric field originates from the term
of $\boldmath{B}\times\boldmath{v}$ and appears at a
position where the flux lines are pushed out of the sample,
where $\boldmath{B}$ and $\boldmath{v}$ are the magnetic
flux density and the velocity of flux lines, respectively.
It was found that the averaged resistivity increased with
increasing magnetic field. This result is similar to that
in the transverse magnetic field and can be interpreted in
terms of the Bardeen-Stephen model. As a result it is
concluded that the energy dissipation in the longitudinal
field is also caused by the motion of flux lines.
- Original paper appears in
-
9th International Symposium on Superconductivity
October 21--25, 1996
Sapporo, Hokkaido, Japan