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Electronic Self-Organization in the Single-Layer Manganite Pr1-xCa1+xMnO4
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2009 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 103, no 16Article in journal (Refereed) Published
Abstract [en]

We use neutron scattering to investigate the doping evolution of the magnetic correlations in the single-layer manganite Pr1-xCa1-xMnO4, away from the x = 0.5 composition where the CE-type commensurate antiferromagnetic (AF) structure is stable. We find that short-range incommensurate spin correlations develop as the system is electron doped (x < 0.5), which coexist with the CE-type AF order. This suggests that electron doping in this system induces an inhomogeneous electronic self-organization, where commensurate AF patches with x = 0.5 are separated by electron-rich domain walls with short-range magnetic correlations. This behavior is strikingly different than for the perovskite Pr1-xCaxMnO3, where the long-range CE-type commensurate AF structure is stable over a wide range of electron or hole doping around x = 0.5.

Place, publisher, year, edition, pages
2009. Vol. 103, no 16
National Category
Engineering and Technology
URN: urn:nbn:se:uu:diva-139872DOI: 10.1103/PhysRevLett.103.167202ISI: 000270899500048OAI: oai:DiVA.org:uu-139872DiVA: diva2:382336
Available from: 2010-12-30 Created: 2010-12-30 Last updated: 2016-04-14Bibliographically approved

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Mathieu, Roland
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