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Article: Thermal transport of fractionalized antiferromagnetic and field-induced states in the Kitaev material Na2Co2TeO6

TitleThermal transport of fractionalized antiferromagnetic and field-induced states in the Kitaev material Na2Co2TeO6
Authors
Issue Date1-May-2023
PublisherAmerican Physical Society
Citation
Physical Review B, 2023, v. 107, n. 18, p. 1-7 How to Cite?
AbstractWe report an in-plane thermal transport study of the honeycomb Kitaev material Na2Co2TeO6 at sub-Kelvin temperatures. In zero magnetic field, the kappa(T) displays a rather weak T dependence but has a nonzero residual term kappa 0/T, indicating strong phonon scattering by magnetic excitation and the possibility of itinerant spinonlike excitations coexisting with an antiferromagnetic order below 27 K. We propose the zero-field ground state is a fractionalized antiferromagnetic (AF*) state with both magnetic order and fractionalized excitations. With both the heat current and magnetic field along the a* (Co-Co bond) direction, the kappa a*(B) exhibits two sharp minima at 7.5 and 10 T, which confirms the phase boundaries of the reported field-induced intermediate state. No such intermediate phase was found in the kappa a(B) for the current and field along the a (zigzag chain) direction. Finally, Na2Co2TeO6 displays a strongly anisotropic magneto-thermal conductivity since the in-plane (out-of-plane) field strongly enhances (suppresses) kappa a* and kappa a.
Persistent Identifierhttp://hdl.handle.net/10722/331111
ISSN
2023 Impact Factor: 3.2
2023 SCImago Journal Rankings: 1.345
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorGuang, SK-
dc.contributor.authorLi, N-
dc.contributor.authorLuo, RL-
dc.contributor.authorHuang, Q-
dc.contributor.authorWang, YY-
dc.contributor.authorYue, XY-
dc.contributor.authorXia, K-
dc.contributor.authorLi, QJ-
dc.contributor.authorZhao, X-
dc.contributor.authorChen, G-
dc.contributor.authorZhou, HD-
dc.contributor.authorSun, XF-
dc.date.accessioned2023-09-21T06:52:51Z-
dc.date.available2023-09-21T06:52:51Z-
dc.date.issued2023-05-01-
dc.identifier.citationPhysical Review B, 2023, v. 107, n. 18, p. 1-7-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/331111-
dc.description.abstractWe report an in-plane thermal transport study of the honeycomb Kitaev material Na2Co2TeO6 at sub-Kelvin temperatures. In zero magnetic field, the kappa(T) displays a rather weak T dependence but has a nonzero residual term kappa 0/T, indicating strong phonon scattering by magnetic excitation and the possibility of itinerant spinonlike excitations coexisting with an antiferromagnetic order below 27 K. We propose the zero-field ground state is a fractionalized antiferromagnetic (AF*) state with both magnetic order and fractionalized excitations. With both the heat current and magnetic field along the a* (Co-Co bond) direction, the kappa a*(B) exhibits two sharp minima at 7.5 and 10 T, which confirms the phase boundaries of the reported field-induced intermediate state. No such intermediate phase was found in the kappa a(B) for the current and field along the a (zigzag chain) direction. Finally, Na2Co2TeO6 displays a strongly anisotropic magneto-thermal conductivity since the in-plane (out-of-plane) field strongly enhances (suppresses) kappa a* and kappa a.-
dc.languageeng-
dc.publisherAmerican Physical Society-
dc.relation.ispartofPhysical Review B-
dc.titleThermal transport of fractionalized antiferromagnetic and field-induced states in the Kitaev material Na2Co2TeO6-
dc.typeArticle-
dc.identifier.doi10.1103/PhysRevB.107.184423-
dc.identifier.scopuseid_2-s2.0-85158815601-
dc.identifier.volume107-
dc.identifier.issue18-
dc.identifier.spage1-
dc.identifier.epage7-
dc.identifier.eissn2469-9969-
dc.identifier.isiWOS:000993990100001-
dc.publisher.placeCOLLEGE PK-
dc.identifier.issnl2469-9950-

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