Manifestations of broken symmetry: The surface phases of Ca2-xSrxRuO4
2008 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 100, no 6, 066102- p.Article in journal (Refereed) Published
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.
INSULATOR-TRANSITION; SR2RUO4; SUPERCONDUCTIVITY; PEROVSKITE
Other Engineering and Technologies
IdentifiersURN: urn:nbn:se:kth:diva-36404DOI: 10.1103/PhysRevLett.100.066102ISI: 000253238400048ScopusID: 2-s2.0-40749158655OAI: oai:DiVA.org:kth-36404DiVA: diva2:430687
QC 201107122011-07-122011-07-122011-07-12Bibliographically approved