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Electronic and Magnetic Nano Phase Separation in Cobaltates La₂₋ₓSrₓCoO₄

Li, Z. W.; Drees, Y.; Ricci, A.; Lamago, D. 1; Piovano, A.; Rotter, M.; Schmidt, W.; Sobolev, O.; Rütt, U.; Gutowski, O.; Sprung, M.; Castellan, J. P. 1; Tjeng, L. H.; Komarek, A. C.
1 Institut für Festkörperphysik (IFP), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

The single-layer perovskite cobaltates have attracted enormous attention due to the recent observation of hour-glass shaped magnetic excitation spectra which resemble the ones of the famous high-temperature superconducting cuprates. Here, we present an overview of our most recent studies of the spin and charge correlations in floating-zone grown cobaltate single crystals. We find that frustration and a novel kind of electronic and magnetic nano phase separation are intimately connected to the appearance of the hour-glass shaped spin excitation spectra. We also point out the difference between nano phase separation and conventional phase separation.


Volltext §
DOI: 10.5445/IR/1000053546
Originalveröffentlichung
DOI: 10.1007/s10948-015-3302-4
Scopus
Zitationen: 8
Web of Science
Zitationen: 7
Dimensions
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Festkörperphysik (IFP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2016
Sprache Englisch
Identifikator ISSN: 1557-1939
urn:nbn:de:swb:90-535463
KITopen-ID: 1000053546
HGF-Programm 43.21.01 (POF III, LK 01) Quantum Correlations in Condensed Matter
Erschienen in Journal of Superconductivity and Novel Magnetism
Verlag Springer-Verlag
Band 29
Heft 3
Seiten 727-731
Schlagwörter Magnetic excitation spectra, Hour-glass. Cobaltate, Cuprate, Superconductor, Neutron, Synchrotron
Nachgewiesen in Web of Science
Dimensions
Scopus
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