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Article: Magnetic Phase Diagram of Cu4-xZnx(OH)(6)FBr Studied by Neutron-Diffraction and μSR Techniques
Title | Magnetic Phase Diagram of Cu4-xZnx(OH)(6)FBr Studied by Neutron-Diffraction and μSR Techniques |
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Authors | |
Keywords | Antiferromagnet Triangular Lattice Heisenberg |
Issue Date | 2020 |
Publisher | Chinese Physical Society & Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0256-307X |
Citation | Chinese Physics Letters, 2020, v. 37 n. 10, article no. 107503 How to Cite? |
Abstract | We systematically investigate the magnetic properties of Cu4 – xZnx(OH)6FBr using the neutron diffraction and muon spin rotation and relaxation (μSR) techniques. Neutron-diffraction measurements suggest that the long-range magnetic order and the orthorhombic nuclear structure in the x = 0 sample can persist up to x = 0.23 and 0.43, respectively. The temperature dependence of the zero-field μSR spectra provides two characteristic temperatures, TA0 and Tλ, which are associated with the initial drop close to zero time and the long-time exponential decay of the muon relaxation, respectively. Comparison between TA0 and TM from previously reported magnetic-susceptibility measurements suggest that the former comes from the short-range interlayer-spin clusters that persist up to x = 0.82. On the other hand, the doping level where Tλ becomes zero is about 0.66, which is much higher than threshold of the long-range order, i.e., ~0.4. Our results suggest that the change in the nuclear structure may alter the spin dynamics of the kagome layers and a gapped quantum-spin-liquid state may exist above x = 0.66 with the perfect kagome planes. |
Persistent Identifier | http://hdl.handle.net/10722/293411 |
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 0.815 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wei, Y | - |
dc.contributor.author | Ma, X | - |
dc.contributor.author | Feng, Z | - |
dc.contributor.author | Adroja, D | - |
dc.contributor.author | Hillier, A | - |
dc.contributor.author | Biswas, P | - |
dc.contributor.author | Senyshyn, A | - |
dc.contributor.author | Hoser, A | - |
dc.contributor.author | Mei, JW | - |
dc.contributor.author | Meng, ZY | - |
dc.contributor.author | Luo, H | - |
dc.contributor.author | Shi, Y | - |
dc.contributor.author | Li, S | - |
dc.date.accessioned | 2020-11-23T08:16:22Z | - |
dc.date.available | 2020-11-23T08:16:22Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Chinese Physics Letters, 2020, v. 37 n. 10, article no. 107503 | - |
dc.identifier.issn | 0256-307X | - |
dc.identifier.uri | http://hdl.handle.net/10722/293411 | - |
dc.description.abstract | We systematically investigate the magnetic properties of Cu4 – xZnx(OH)6FBr using the neutron diffraction and muon spin rotation and relaxation (μSR) techniques. Neutron-diffraction measurements suggest that the long-range magnetic order and the orthorhombic nuclear structure in the x = 0 sample can persist up to x = 0.23 and 0.43, respectively. The temperature dependence of the zero-field μSR spectra provides two characteristic temperatures, TA0 and Tλ, which are associated with the initial drop close to zero time and the long-time exponential decay of the muon relaxation, respectively. Comparison between TA0 and TM from previously reported magnetic-susceptibility measurements suggest that the former comes from the short-range interlayer-spin clusters that persist up to x = 0.82. On the other hand, the doping level where Tλ becomes zero is about 0.66, which is much higher than threshold of the long-range order, i.e., ~0.4. Our results suggest that the change in the nuclear structure may alter the spin dynamics of the kagome layers and a gapped quantum-spin-liquid state may exist above x = 0.66 with the perfect kagome planes. | - |
dc.language | eng | - |
dc.publisher | Chinese Physical Society & Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0256-307X | - |
dc.relation.ispartof | Chinese Physics Letters | - |
dc.subject | Antiferromagnet | - |
dc.subject | Triangular Lattice | - |
dc.subject | Heisenberg | - |
dc.title | Magnetic Phase Diagram of Cu4-xZnx(OH)(6)FBr Studied by Neutron-Diffraction and μSR Techniques | - |
dc.type | Article | - |
dc.identifier.email | Meng, ZY: zymeng@hku.hk | - |
dc.identifier.authority | Meng, ZY=rp02524 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1088/0256-307X/37/10/107503 | - |
dc.identifier.scopus | eid_2-s2.0-85094626204 | - |
dc.identifier.hkuros | 318913 | - |
dc.identifier.volume | 37 | - |
dc.identifier.issue | 10 | - |
dc.identifier.spage | article no. 107503 | - |
dc.identifier.epage | article no. 107503 | - |
dc.identifier.isi | WOS:000579329100001 | - |
dc.publisher.place | China | - |
dc.identifier.issnl | 0256-307X | - |