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Antiferromagnetism in Zn-doped La2CuO4 as observed by muon spin resonance spectroscopy
Mälardalens högskola, Akademin för innovation, design och teknik. Uppsala University, Sweden.ORCID-id: 0000-0002-5832-5452
Uppsala University, Sweden.
Uppsala University, Sweden.
Uppsala University, Sweden.
Vise andre og tillknytning
2001 (engelsk)Inngår i: Physical Review B - Condensed Matter and Materials Physics, ISSN 0163-1829, Vol. 64, nr 18, s. 1845221-1845226, artikkel-id 184522Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2001. Vol. 64, nr 18, s. 1845221-1845226, artikkel-id 184522
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URN: urn:nbn:se:mdh:diva-10900ISI: 000172239400118Scopus ID: 2-s2.0-0035510023OAI: oai:DiVA.org:mdh-10900DiVA, id: diva2:369239
Tilgjengelig fra: 2010-11-10 Laget: 2010-11-10 Sist oppdatert: 2016-01-15bibliografisk kontrollert

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