Issue |
Europhys. Lett.
Volume 36, Number 9, December III 1996
|
|
---|---|---|
Page(s) | 707 - 712 | |
Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
DOI | https://doi.org/10.1209/epl/i1996-00291-y | |
Published online | 01 September 2002 |
Half-integer flux quantum effect in tricrystal Bi2Sr2CaCu2O8+δ
1
IBM T.J. Watson Research Center -
P.O.Box 218, Yorktown Heights, NY 10598, USA
2
Laboratoire de Physique des Solides,
Université Paris-sud - 91405 Orsay, France
Received:
23
September
1996
Accepted:
6
November
1996
We have used a scanning SQUID microscope to directly observe the half-integer flux quantum effect, in epitaxial films of , at the meeting point of a tricrystal substrate of in a geometry chosen to show this effect for a d-wave superconductor. This observation, when considered along with recent photoemission results, proves that the in-plane order parameter for this high-Tc cuprate superconductor closely follows symmetry.
PACS: 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects / 74.72.Hs – Bi-based compounds / 74.20.-z – Superconductivity: theory
© EDP Sciences, 1996
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