Cross-type orbital ordering in the layered hybrid organic-inorganic compound (C6
H5CH2CH2NH3)2CuCl4

Nugroho, A. A.; Hu, Z.; Kuo, C. Y.; Haverkort, M. W.; Pi, T. W.; Onggo, D.; Valldor, M.; Tjeng, L. H.

doi:10.1103/PhysRevB.94.184404

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Cross-type orbital ordering in the layered hybrid organic-inorganic compound (C₆H₅CH₂CH₂NH₃)₂CuCl₄

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Hu, Z.
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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

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Haverkort, M. W.
Maurits Haverkort, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Valldor, M.
Martin Valldor, 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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Citation

Nugroho, A. A., Hu, Z., Kuo, C. Y., Haverkort, M. W., Pi, T. W., Onggo, D., et al. (2016). Cross-type orbital ordering in the layered hybrid organic-inorganic compound (C₆H₅CH₂CH₂NH₃)₂CuCl₄. Physical Review B, 94(18): 184404, pp. 1-5. doi:10.1103/PhysRevB.94.184404.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-0ADB-5

Abstract

We have studied the magnetic properties and the underlying type of orbital ordering in the layered hybrid organic-inorganic compound (C6H5CH2CH2NH3)(2)CuCl4 by using ac-magnetic susceptibility and polarization-dependent soft-x-ray absorption spectroscopy at the Cu-L-2 and Cu-L-3 edges. We have established that the compound has a long-range ferromagnetic ordering both in plane and out of plane and we found from the analysis of the absorption spectra that the orbital ordering of the Cu2+ holes involves the cross-type d(x2-z2)/d(y2-z2) arrangement which is different from the d(x2-y2) arrangement found in the parent compounds of the high-T-c cuprate superconductors.