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Article: Magnetic order in XY-type antiferromagnetic monolayer CoPS3 revealed by Raman spectroscopy

TitleMagnetic order in XY-type antiferromagnetic monolayer CoPS3 revealed by Raman spectroscopy
Authors
Issue Date2021
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/
Citation
Physical Review B: covering condensed matter and materials physics, 2021, v. 103 n. 23, p. article no. 235411 How to Cite?
AbstractMermin-Wagner-Coleman theorem predicts no long-range magnetic order at finite temperature in the two-dimensional (2D) isotropic systems, but it does predict a quasi-long-range order with a divergent correlation length at the Kosterlitz-Thouless (KT) transition for planar magnets. As a representative of two-dimensional planar antiferromagnets, single-layer CoPS3 carries the promise of monolayer antiferromagnetic platforms for the ultimately thin spintronics. Here, with the aid of magnetostriction which is sensitive to the local magnetic order, we observe the signature phonon mode splitting of below TKT in monolayer CoPS3. The two-magnon signal in the monolayer one manifests the associated magnetic transition. It indicates the quasi-long-range order in an exact 2D planar spin model below KT phase transition. The ratio (J′/J) between the interlayer and intralayer interactions, which characterizes the 2D behaviors, is evaluated to be around 0.03. Our results provide an efficient method to detect the quasi-long-range antiferromagnetic ordering in the two-dimensional magnets down to the monolayer limit. © 2021 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/301171
ISSN
2020 Impact Factor: 4.036
2020 SCImago Journal Rankings: 1.780
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLIU, Q-
dc.contributor.authorWang, L-
dc.contributor.authorFu, Y-
dc.contributor.authorZhang, X-
dc.contributor.authorHuang, L-
dc.contributor.authorSu, H-
dc.contributor.authorLin, J-
dc.contributor.authorChen, X-
dc.contributor.authorYu, D-
dc.contributor.authorCui, X-
dc.contributor.authorMei, JW-
dc.contributor.authorDai, JF-
dc.date.accessioned2021-07-27T08:07:10Z-
dc.date.available2021-07-27T08:07:10Z-
dc.date.issued2021-
dc.identifier.citationPhysical Review B: covering condensed matter and materials physics, 2021, v. 103 n. 23, p. article no. 235411-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/301171-
dc.description.abstractMermin-Wagner-Coleman theorem predicts no long-range magnetic order at finite temperature in the two-dimensional (2D) isotropic systems, but it does predict a quasi-long-range order with a divergent correlation length at the Kosterlitz-Thouless (KT) transition for planar magnets. As a representative of two-dimensional planar antiferromagnets, single-layer CoPS3 carries the promise of monolayer antiferromagnetic platforms for the ultimately thin spintronics. Here, with the aid of magnetostriction which is sensitive to the local magnetic order, we observe the signature phonon mode splitting of below TKT in monolayer CoPS3. The two-magnon signal in the monolayer one manifests the associated magnetic transition. It indicates the quasi-long-range order in an exact 2D planar spin model below KT phase transition. The ratio (J′/J) between the interlayer and intralayer interactions, which characterizes the 2D behaviors, is evaluated to be around 0.03. Our results provide an efficient method to detect the quasi-long-range antiferromagnetic ordering in the two-dimensional magnets down to the monolayer limit. © 2021 American Physical Society.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/-
dc.relation.ispartofPhysical Review B: covering condensed matter and materials physics-
dc.rightsCopyright [2021] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevB.103.235411].-
dc.titleMagnetic order in XY-type antiferromagnetic monolayer CoPS3 revealed by Raman spectroscopy-
dc.typeArticle-
dc.identifier.emailCui, X: xdcui@hku.hk-
dc.identifier.authorityCui, X=rp00689-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevB.103.235411-
dc.identifier.scopuseid_2-s2.0-85108068707-
dc.identifier.hkuros323385-
dc.identifier.volume103-
dc.identifier.issue23-
dc.identifier.spagearticle no. 235411-
dc.identifier.epagearticle no. 235411-
dc.identifier.isiWOS:000661507600006-
dc.publisher.placeUnited States-

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