Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]

Gomilšek, Matjaž (Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia & Centre for Materials Physics, Durham University, South Road, Durham DH1 3LE, United Kingdom); Zorko, Andrej (Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia); Mi, Jin-Xiao (Fujian Provincial Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People’s Republic of China); Sun, Wei (Fujian Provincial Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People’s Republic of China); Zaharko, Oksana (Laboratory for Neutron Scattering, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland); Klanjšek, Martin (Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia); Pregelj, Matej (Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia)

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Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset] Open Access

The magnetic ground state of the ideal quantum kagome antiferromagnet (QKA) has been a long-standing puzzle, mainly because perturbations to the nearest-neighbor isotropic Heisenberg Hamiltonian can lead to various fundamentally different ground states. Here we investigate a recently synthesized QKA representative, YCu3(OH)6Cl3, in which perturbations commonly present in real materials, like lattice distortion and intersite ion mixing, are absent. Nevertheless, this compound enters a long-range magnetically ordered state below TN = 15K. Our powder neutron diffraction experiment reveals that its magnetic structure corresponds to a coplanar 120◦ state with negative vector spin chirality. The ordered magnetic moments are suppressed to 0.42(2)μB, which is consistent with the previously detected spin dynamics persisting to the lowest experimentally accessible temperatures. This indicates either a coexistence of magnetic order and disorder or the presence of strong quantum fluctuations in the ground state of YCu3(OH)6Cl3. The origin of the magnetic order is sought in terms of Dzyaloshinskii-Moriya magnetic anisotropy and further-neighbor isotropic exchange interactions.

Descriptions

Resource type: Dataset
Contributors: Contact person: Zorko, Andrej ¹
Creator: Gomilšek, Matjaž ²
Pregelj, Matej ¹
Klanjšek, Martin ¹
Zaharko, Oksana ³
Sun, Wei ⁴
Mi, Jin-Xiao ⁴

¹ Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia
² Jožef Stefan Institute, Jamova c. 39, SI-1000 Ljubljana, Slovenia & Centre for Materials Physics, Durham University, South Road, Durham DH1 3LE, United Kingdom
³ Laboratory for Neutron Scattering, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
⁴ Fujian Provincial Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People’s Republic of China
Funder: Javna Agencija za Raziskovalno Dejavnost RS (Slovenian Research Agency)
Engineering and Physical Sciences Research Council
Research methods
Other description
Keyword: Magnetic order
Chirality
Spin fragmentation
Geometric frustration
Kagome
Magnetism
Antiferromagnet
Dzyaloshinskii-Moriya
Persistent spin dynamics
Neutron scattering
Representation analysis
Subject: Condensed matter
Location
Language: English
Cited in: arxiv:1907.07489
Identifier: ark:/32150/r2qr46r083v
doi:10.15128/r2qr46r083v
Rights: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC)
Publisher: Durham University
Date Created

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Depositor: N. Syrotiuk
Date Uploaded: 3 October 2019, 12:10:36
Date Modified: 4 October 2019, 12:10:47
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Last modified: 2019:10:03 13:21:45+01:00

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User M. Gomilsek has updated Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]	over 5 years ago
User M. Gomilsek has updated Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]	over 5 years ago
User N. Syrotiuk has updated Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]	over 5 years ago
User N. Syrotiuk has updated Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]	over 5 years ago
User N. Syrotiuk has updated Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]	over 5 years ago
User N. Syrotiuk has updated Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]	over 5 years ago
User N. Syrotiuk has updated Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]	over 5 years ago
User N. Syrotiuk has updated Negative vector chirality 120◦ spin structure in the defect- and distortion-free quantum kagome antiferromagnet YCu3(OH)6Cl3 [dataset]	over 5 years ago
User N. Syrotiuk has deposited data.zip	over 5 years ago