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,, Gustaaf Van Tendeloo, Nicholas ApRoberts-Warren, Adam P. Dioguardi, Nicholas, J. Curro, Martha Greenblatt
TL;DR
This study demonstrates bulk magnetic order in a 2D nickelate with Ni1+/Ni2+ ions, showing an antiferromagnetic transition at 105 K, supported by experimental and theoretical evidence, and relates it to Fermi surface nesting.
Contribution
It provides the first combined experimental and theoretical evidence of magnetic order in La4Ni3O8, highlighting its similarity to cuprates and elucidating the transition mechanism.
Findings
Antiferromagnetic transition at 105 K confirmed by multiple methods
Fermi surface nesting explains magnetic ordering
The material is isoelectronic with superconducting cuprates
Abstract
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].
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.