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arxiv: 1003.3276 · v1 · submitted 2010-03-16 · ❄️ cond-mat.str-el · cond-mat.supr-con

Bulk magnetic order in a two dimensional Ni1+/Ni2+ (d9/d8) nickelate, isoelectronic with superconducting cuprates

Viktor V. Poltavets , Konstantin A. Lokshin , Takeshi Egami , Andriy H. Nevidomskyy , Mark Croft , Gabriel Kotliar , Trevor A. Tyson , Joke Hadermann
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Gustaaf Van Tendeloo Nicholas ApRoberts-Warren Adam P. Dioguardi Nicholas J. Curro Martha Greenblatt
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classification ❄️ cond-mat.str-el cond-mat.supr-con
keywords bulkcupratesdimensionalisoelectronicmagneticnickelateordersuperconducting
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Bulk magnetic order in two dimensional La4Ni3O8 nickelate with Ni1+/Ni2+ (d9/d8), isoelectronic with superconducting cuprates is demonstrated experimentally and theoretically. Magnetization, specific heat and 139La NMR evidence a transition at 105 K to an antiferromagnetic state. Theoretical calculations by DFT relate the transition to a nesting instability of the Fermi surface with ordering wave-vector Q = [1/3, 1/3, 0].

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