Magnetotunneling experiments using La0.7Sr0.3MnO3 based break junctions

Authors
Baszynski, J Tolinski, T
Citation
J. Baszynski et T. Tolinski, Magnetotunneling experiments using La0.7Sr0.3MnO3 based break junctions, ACT PHY P A, 98(5), 2000, pp. 567-570
Citations number
10
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA A
ISSN journal
05874246 → ACNP
Volume
98
Issue
5
Year of publication
2000
Pages
567 - 570
Database
ISI
SICI code
0587-4246(200011)98:5<567:MEULBB>2.0.ZU;2-8
Abstract
The La0.7Sr0.3MnO3 perovskite is a ferromagnetic half-metal with a strong s pin polarization and high Curie temperature T-C (355 K). We have shown that a combination of the break junction technique with the special properties of the La0.7Sr0.3MnO3 perovskite can lead to extremely high values of tunne ling magnetoresistance ratio (> 10(3)%) and high field sensitivity (30%/Oe) . These results are obtained in magnetic fields below 1 kOe and at room tem perature.