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Bandwidth-disorder phase diagram of half-doped layered manganites
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
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2006 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 74, no 2Article in journal (Refereed) Published
Abstract [en]

Phase diagrams in the plane of rA (the average ionic radius, related to the one-electron bandwidth W) and σ2 (the ionic radius variance, measuring the quenched disorder), or bandwidth-disorder phase diagrams, have been established for perovskite manganites, with a three-dimensional (3D) Mn-O network. Here we establish the intrinsic bandwidth-disorder phase diagram of half-doped layered manganites with a two-dimensional (2D) Mn-O network, examining in detail the parent state of the colossal magnetoresistance phenomenon in crystals without ferromagnetic instability. The consequences of the reduced dimensionality, from 3D to 2D, for the order-disorder phenomena in the charge-orbital sectors are also highlighted.

Place, publisher, year, edition, pages
2006. Vol. 74, no 2
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Physical Sciences
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URN: urn:nbn:se:kth:diva-156321DOI: 10.1103/PhysRevB.74.020404ISI: 000239426600006Scopus ID: 2-s2.0-33746519929OAI: oai:DiVA.org:kth-156321DiVA: diva2:766868
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QC 20141128

Available from: 2014-11-28 Created: 2014-11-26 Last updated: 2017-12-05Bibliographically approved

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