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Antiferromagnetism in Zn-doped La2CuO4 as observed by muon spin resonance spectroscopy
Mälardalen University, School of Innovation, Design and Engineering. Uppsala University, Sweden.ORCID iD: 0000-0002-5832-5452
Uppsala University, Sweden.
Uppsala University, Sweden.
Uppsala University, Sweden.
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2001 (English)In: Physical Review B - Condensed Matter and Materials Physics, ISSN 0163-1829, Vol. 64, no 18, p. 1845221-1845226, article id 184522Article in journal (Refereed) Published
Abstract [en]

The local fields seen by positive muons implanted in Zn-doped La2CuO4 show a distribution with a main peak attributed to muon sites far from the Zn ions and a satellite structure corresponding to muons residing closer to the Zn. The temperature dependence indicates a strong loss of magnetic order for Cu moments near the Zn atoms. The data can be understood in terms of a model where a Zn ion not only introduces a vacancy in the magnetic Cu lattice but also creates a RKKY-type disturbance. The electron spin polarization around the Zn ions induces a change of the magnetic moments on surrounding Cu ions. The AF lattice is found to be strongly perturbed within a radius of 10 Angstrom around each Zn ion. Possible consequences for the superconductivity of the corresponding Sr-doped materials are discussed.

Place, publisher, year, edition, pages
2001. Vol. 64, no 18, p. 1845221-1845226, article id 184522
National Category
Condensed Matter Physics Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:mdh:diva-10900ISI: 000172239400118Scopus ID: 2-s2.0-0035510023OAI: oai:DiVA.org:mdh-10900DiVA, id: diva2:369239
Available from: 2010-11-10 Created: 2010-11-10 Last updated: 2016-01-15Bibliographically approved

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Ekström, Mikael

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