Toth, S;
Wu, W;
Adroja, DT;
Rayaprol, S;
Sampathkumaran, EV;
(2016)
Frustrated Ising chains on the triangular lattice in Sr3NiIrO6.
Physical Review B
, 93
, Article 174422. 10.1103/PhysRevB.93.174422.
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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.
| Type: | Article |
|---|---|
| Title: | Frustrated Ising chains on the triangular lattice in Sr3NiIrO6 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.93.174422 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.93.174422 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Condensed Matter, Physics, COMPOUND, CA3CO2O6, TRANSITIONS, CSCOBR3, NET |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10044075 |
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