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Electronic and Magnetic Nano Phase Separation in Cobaltates La2-xSrxCoO4

MPG-Autoren
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Li,  Z. W.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Drees,  Y.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Rotter,  M.
Martin Rotter, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Tjeng,  L. H.
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Komarek,  A. C.
Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Li, Z. W., Drees, Y., Ricci, A., Lamago, D., Piovano, A., Rotter, M., et al. (2016). Electronic and Magnetic Nano Phase Separation in Cobaltates La2-xSrxCoO4. Journal of Superconductivity and Novel Magnetism, 29(3), 727-731. doi:10.1007/s10948-015-3302-4.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002A-2C45-0
Zusammenfassung
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.