Comparative Raman scattering study of crystal field excitations in Co-based quantum magnets

Banasree S. Mou; Xinshu Zhang; Li Xiang; Yuanyuan Xu; Ruidan Zhong; Robert J. Cava; Haidong Zhou; Zhigang Jiang; Dmitry Smirnov; Natalia Drichko; Stephen M. Winter

doi:10.1103/PhysRevMaterials.8.084408

Comparative Raman scattering study of crystal field excitations in Co-based quantum magnets

Banasree S. Mou, Xinshu Zhang, Li Xiang, Yuanyuan Xu, Ruidan Zhong, Robert J. Cava, Haidong Zhou, Zhigang Jiang, Dmitry Smirnov, Natalia Drichko, Stephen M. Winter

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Co-based materials have recently been explored because of their potential to realize complex bond-dependent anisotropic magnetism. Prominent examples include Na2Co2TeO6, BaCo2(AsO4)2, Na2BaCo(PO4)2, and CoX2 (X=Cl,Br,I). In order to provide insight into the magnetic interactions in these compounds, we make a comparative analysis of their local crystal electric field excitations spectra via Raman scattering measurements. Combining these measurements with theoretical analysis confirms the validity of jeff=1/2 single-ion ground states for all compounds, and provides accurate experimental estimates of the local crystal distortions, which play a prominent role in the magnetic couplings between spin-orbital coupled Co moments.

Original language	English (US)
Article number	084408
Journal	Physical Review Materials
Volume	8
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevMaterials.8.084408
State	Published - Aug 2024

All Science Journal Classification (ASJC) codes

General Materials Science
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevMaterials.8.084408

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title = "Comparative Raman scattering study of crystal field excitations in Co-based quantum magnets",

abstract = "Co-based materials have recently been explored because of their potential to realize complex bond-dependent anisotropic magnetism. Prominent examples include Na2Co2TeO6, BaCo2(AsO4)2, Na2BaCo(PO4)2, and CoX2 (X=Cl,Br,I). In order to provide insight into the magnetic interactions in these compounds, we make a comparative analysis of their local crystal electric field excitations spectra via Raman scattering measurements. Combining these measurements with theoretical analysis confirms the validity of jeff=1/2 single-ion ground states for all compounds, and provides accurate experimental estimates of the local crystal distortions, which play a prominent role in the magnetic couplings between spin-orbital coupled Co moments.",

author = "Mou, {Banasree S.} and Xinshu Zhang and Li Xiang and Yuanyuan Xu and Ruidan Zhong and Cava, {Robert J.} and Haidong Zhou and Zhigang Jiang and Dmitry Smirnov and Natalia Drichko and Winter, {Stephen M.}",

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T1 - Comparative Raman scattering study of crystal field excitations in Co-based quantum magnets

AU - Mou, Banasree S.

AU - Zhang, Xinshu

AU - Xiang, Li

AU - Xu, Yuanyuan

AU - Zhong, Ruidan

AU - Cava, Robert J.

AU - Zhou, Haidong

AU - Jiang, Zhigang

AU - Smirnov, Dmitry

AU - Drichko, Natalia

AU - Winter, Stephen M.

PY - 2024/8

Y1 - 2024/8

N2 - Co-based materials have recently been explored because of their potential to realize complex bond-dependent anisotropic magnetism. Prominent examples include Na2Co2TeO6, BaCo2(AsO4)2, Na2BaCo(PO4)2, and CoX2 (X=Cl,Br,I). In order to provide insight into the magnetic interactions in these compounds, we make a comparative analysis of their local crystal electric field excitations spectra via Raman scattering measurements. Combining these measurements with theoretical analysis confirms the validity of jeff=1/2 single-ion ground states for all compounds, and provides accurate experimental estimates of the local crystal distortions, which play a prominent role in the magnetic couplings between spin-orbital coupled Co moments.

AB - Co-based materials have recently been explored because of their potential to realize complex bond-dependent anisotropic magnetism. Prominent examples include Na2Co2TeO6, BaCo2(AsO4)2, Na2BaCo(PO4)2, and CoX2 (X=Cl,Br,I). In order to provide insight into the magnetic interactions in these compounds, we make a comparative analysis of their local crystal electric field excitations spectra via Raman scattering measurements. Combining these measurements with theoretical analysis confirms the validity of jeff=1/2 single-ion ground states for all compounds, and provides accurate experimental estimates of the local crystal distortions, which play a prominent role in the magnetic couplings between spin-orbital coupled Co moments.

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Comparative Raman scattering study of crystal field excitations in Co-based quantum magnets

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