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Ferromagnetic nanoregions in cubic antiferromagnet Sr1-xLaxMnO3 probed by NMR

Date
Dec 17, 2019
Time
2:00 PM - 3:00 PM
Speaker
Dr. Alexander Yu. Germov
Affiliation
M.N. Mikheev Institute of Metal Physics; Russian Academy of Sciences
Language
en
Main Topic
Materialien
Host
Christine Malbrich
Description
The transition from insulator to metal state was discovered in lightly electron-doped (x~0.01) cubic single crystal manganites and discribed in the model of homogenious metallic canted antiferromagnet [Phys. Rev.B, 2010. B 82, 180409]. The formation of metallic antiferromagnet at very low doping concentrations contradicts general ideas about manganites. The latter usually are magnetically inhomogeneous systems, in which percolation of ferromagnetic regions and consiquently metallic conductivity can be reached at x>0.16. In order to study these phenomena the 87Sr,139La, 55Mn, 17O NMR have been used. This complex study gives an information about the type of magnetic inhomogeneities, charge and spin denstity distibution and clarify mechanisms the metallic conductivity.
Links

Last modified: Dec 6, 2019, 12:05:31 AM

Location

Leibniz Institut für Festkörper- und Werkstoffforschung Dresden (D2E.27, IFW Dresden)Helmholtzstraße2001069Dresden
Homepage
http://www.ifw-dresden.de

Organizer

Leibniz Institut für Festkörper- und Werkstoffforschung DresdenHelmholtzstraße2001069Dresden
Homepage
http://www.ifw-dresden.de
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