BROWSE

Related Scientist

CCES's photo.

CCES
강상관계 물질 연구단
more info

ITEM VIEW & DOWNLOAD

Spin-disorder state near nonmagnetic impurities in the frustrated antiferromagnet YMnO3

Cited 0 time in webofscience Cited 0 time in scopus
6 Viewed 0 Downloaded
Title
Spin-disorder state near nonmagnetic impurities in the frustrated antiferromagnet YMnO3
Author(s)
Sumin Lim; Sejun Park; Soonchil Lee; Kisoo Park; Hasung Sim; Je-Geun Park; Seongsu Lee; Helen E. Maynard-Casely
Publication Date
2020-11
Journal
PHYSICAL REVIEW B, v.102, no.18, pp.184427
Publisher
AMER PHYSICAL SOC
Abstract
© 2020 American Physical Society. The effects of nonmagnetic Al impurities on a magnetic bath YMnO3 are studied by magnetization, heat capacity, neutron diffraction, and NMR measurements. Suppression of the Neel order with an increase in the doping rate is evidenced by the heat capacity and M-T curve, also showing vacancy-induced magnetization. Theory predicts that the vacancies in triangular antiferromagnets release the local frustration partially by a readjustment of the spin directions, which results in a net magnetic moment of 0.04S around the impurity site, where S is the single spin moment. Interestingly, our NMR results show that the amplitude of the impurity moment is similar to S, which is one order of magnitude larger than a previous prediction. The direction of the impurity moment and neighboring spins generating a hyperfine field at a nonmagnetic impurity site are random. Above T-N, the release of frustration due to a spin-vacancy is evidenced by the enhancement of the antiferromagnetic correlation of spins near impurity sites. Based on careful consideration about the structural distortion, we suggest that this huge spin-disorder originates from the magnetic correlation between impurity moments
URI
https://pr.ibs.re.kr/handle/8788114/9435
DOI
10.1103/PhysRevB.102.184427
ISSN
2469-9950
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