BROWSE

Related Scientist

CCES's photo.

CCES
강상관계 물질 연구단
more info

ITEM VIEW & DOWNLOAD

Antiferromagnetic Kitaev interaction inJ (eff)=1/2 cobalt honeycomb materials Na3Co2SbO6 and Na2Co2TeO6

Cited 0 time in webofscience Cited 0 time in scopus
136 Viewed 0 Downloaded
Title
Antiferromagnetic Kitaev interaction inJ (eff)=1/2 cobalt honeycomb materials Na3Co2SbO6 and Na2Co2TeO6
Author(s)
Kim, Chaebin; Jaehong Jeong; Lin, Gaoting; Park, Pyeongjae; Masuda, Takatsugu; Asai, Shinichiro; Itoh, Shinichi; Kim, Heung-Sik; Zhou, Haidong; Ma, Jie; Park, Je-Geun
Publication Date
2022-01
Journal
Journal of Physics Condensed Matter, v.34, no.4
Publisher
Institute of Physics Publishing
Abstract
Finding new materials with antiferromagnetic (AFM) Kitaev interaction is an urgent issue for quantum magnetism research. We conclude that Na3Co2SbO6 and Na2Co2TeO6 are new honeycomb cobalt-based systems with AFM Kitaev interaction by carrying out inelastic neutron scattering experiments and subsequent analysis. The spin-orbit excitons observed at 20-28 meV in both compounds strongly support the idea that Co2+ ions of both compounds have a spin-orbital entangled J (eff) = 1/2 state. Furthermore, we found that a generalized Kitaev-Heisenberg Hamiltonian can describe the spin-wave excitations of both compounds with additional 3rd nearest-neighbor interaction. Our best-fit parameters show significant AFM Kitaev terms and off-diagonal symmetric anisotropy terms of a similar magnitude in both compounds. We also found a strong magnon-damping effect at the higher energy part of the spin waves, entirely consistent with observations in other Kitaev magnets. Our work suggests Na3Co2SbO6 and Na2Co2TeO6 as rare examples of the AFM Kitaev magnets based on the systematic studies of the spin waves and analysis.
URI
https://pr.ibs.re.kr/handle/8788114/10813
DOI
10.1088/1361-648X/ac2644
ISSN
0953-8984
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse