Frustrated Ising chains on the triangular lattice in Sr3NiIrO6

S. Toth; W. Wu; D. T. Adroja; S. Rayaprol; E. V. Sampathkumaran

doi:10.1103/PhysRevB.93.174422

Frustrated Ising chains on the triangular lattice in Sr3NiIrO6

S. Toth, W. Wu, D. T. Adroja, S. Rayaprol, E. V. Sampathkumaran

Physics

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Inelastic neutron scattering study on the spin-chain compound Sr3NiIrO6 reveals gapped quasi-1D magnetic excitations. The observed one-magnon band between 29.5 and 39 meV consists of magnon modes of the Ni2+ ions. The fitting of the spin wave spectrum reveals strongly coupled Ising-like chains along the c axis that are weakly coupled into a frustrated triangular lattice in the ab plane. The magnetic excitations survive up to 200 K well above the magnetic ordering temperature of TN∼75 K, also indicating a quasi-1D nature of the magnetic interactions in Sr3NiIrO6. Our microscopic model is in agreement with ab initio electronic structure calculations and explains the giant spin-flip field observed in bulk magnetization measurements.

Original language	English
Article number	174422
Journal	Physical Review B
Volume	93
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.93.174422
Publication status	Published - 23 May 2016

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Frustrated Ising chains on the triangular lattice in Sr3NiIrO6",

abstract = "Inelastic neutron scattering study on the spin-chain compound Sr3NiIrO6 reveals gapped quasi-1D magnetic excitations. The observed one-magnon band between 29.5 and 39 meV consists of magnon modes of the Ni2+ ions. The fitting of the spin wave spectrum reveals strongly coupled Ising-like chains along the c axis that are weakly coupled into a frustrated triangular lattice in the ab plane. The magnetic excitations survive up to 200 K well above the magnetic ordering temperature of TN∼75 K, also indicating a quasi-1D nature of the magnetic interactions in Sr3NiIrO6. Our microscopic model is in agreement with ab initio electronic structure calculations and explains the giant spin-flip field observed in bulk magnetization measurements.",

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AU - Wu, W.

AU - Adroja, D. T.

AU - Rayaprol, S.

AU - Sampathkumaran, E. V.

PY - 2016/5/23

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N2 - Inelastic neutron scattering study on the spin-chain compound Sr3NiIrO6 reveals gapped quasi-1D magnetic excitations. The observed one-magnon band between 29.5 and 39 meV consists of magnon modes of the Ni2+ ions. The fitting of the spin wave spectrum reveals strongly coupled Ising-like chains along the c axis that are weakly coupled into a frustrated triangular lattice in the ab plane. The magnetic excitations survive up to 200 K well above the magnetic ordering temperature of TN∼75 K, also indicating a quasi-1D nature of the magnetic interactions in Sr3NiIrO6. Our microscopic model is in agreement with ab initio electronic structure calculations and explains the giant spin-flip field observed in bulk magnetization measurements.

AB - Inelastic neutron scattering study on the spin-chain compound Sr3NiIrO6 reveals gapped quasi-1D magnetic excitations. The observed one-magnon band between 29.5 and 39 meV consists of magnon modes of the Ni2+ ions. The fitting of the spin wave spectrum reveals strongly coupled Ising-like chains along the c axis that are weakly coupled into a frustrated triangular lattice in the ab plane. The magnetic excitations survive up to 200 K well above the magnetic ordering temperature of TN∼75 K, also indicating a quasi-1D nature of the magnetic interactions in Sr3NiIrO6. Our microscopic model is in agreement with ab initio electronic structure calculations and explains the giant spin-flip field observed in bulk magnetization measurements.

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Frustrated Ising chains on the triangular lattice in Sr3NiIrO6

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