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Manifestations of broken symmetry: The surface phases of Ca2-xSrxRuO4
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theory of Materials. KTH, School of Biotechnology (BIO), Centres, Albanova VinnExcellence Center for Protein Technology, ProNova.
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2008 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 100, no 6, 066102- p.Article in journal (Refereed) Published
Abstract [en]

The surface structural phases of Ca2-xSrxRuO4 are investigated using quantitative low energy electron diffraction. The broken symmetry at the surface enhances the structural instability against the RuO6 rotational distortion while diminishing the instability against the RuO6 tilt distortion occurring within the bulk crystal. As a result, suppressed structural and electronic surface phase transition temperatures are observed, including the appearance of an inherent Mott metal-to-insulator transition for x=0.1 and possible modifications of the surface quantum critical point near x(c)similar to 0.5.

Place, publisher, year, edition, pages
2008. Vol. 100, no 6, 066102- p.
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Other Engineering and Technologies
URN: urn:nbn:se:kth:diva-36404DOI: 10.1103/PhysRevLett.100.066102ISI: 000253238400048ScopusID: 2-s2.0-40749158655OAI: diva2:430687
QC 20110712Available from: 2011-07-12 Created: 2011-07-12 Last updated: 2011-07-12Bibliographically approved

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Rundgren, John
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Theory of MaterialsAlbanova VinnExcellence Center for Protein Technology, ProNova
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