Dynamical ground state in the XY pyrochlore Yb2GaSbO7
| Autor: | Haidong Zhou, Mitchell M. Bordelon, Minseong Lee, J. P. Attfield, Alannah Hallas, C. R. Wiebe, J. A. M. Paddison, Chris Stock, Matthew B. Stone, P. M. Sarte, Dalmau Reig-i-Plessis, L. Mangin-Thro, Ka H. Hong, K. Cruz-Kan, Daniel M. Pajerowski, Stuart Calder, Yiming Qiu, Stephen D. Wilson, Eun Sang Choi, Adam A. Aczel, Brenden R. Ortiz |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Condensed matter physics Magnetism Pyrochlore engineering.material Neutron scattering Condensed Matter Physics 01 natural sciences Magnetic susceptibility 010305 fluids & plasmas Magnetic field Electronic Optical and Magnetic Materials Ferromagnetism 0103 physical sciences engineering TA401-492 Condensed Matter::Strongly Correlated Electrons Atomic physics. Constitution and properties of matter 010306 general physics Ground state Materials of engineering and construction. Mechanics of materials Spin-½ QC170-197 |
| Zdroj: | Sarte, P M, Cruz-Kan, K, Ortiz, B R, Hong, K H, Bordelon, M M, Reig-i-Plessis, D, Lee, M, Choi, E S, Stone, M B, Calder, S, Pajerowski, D M, Mangin-Thro, L, Qiu, Y, Attfield, J P, Wilson, S D, Stock, C, Zhou, H D, Hallas, A M, Paddison, J A M, Aczel, A A & Wiebe, C R 2021, ' Dynamical ground state in the XY pyrochlore Yb 2 GaSbO 7 ', npj Quantum Materials, vol. 6, no. 1, 42 . https://doi.org/10.1038/s41535-021-00343-4 'npj Quantum Materials ', vol: 6, pages: 42-1-42-9 (2021) npj Quantum Materials, Vol 6, Iss 1, Pp 1-9 (2021) |
| Popis: | The magnetic ground state of the pyrochlore Yb2GaSbO7 has not been established. The persistent spin fluctuations observed by muon spin-relaxation measurements at low temperatures have not been adequately explained for this material using existing theories for quantum magnetism. Here we report on the synthesis and characterisation of Yb2GaSbO7 to revisit the nature of the magnetic ground state. Through DC and AC magnetic susceptibility, heat capacity, and neutron scattering experiments, we observe evidence for a dynamical ground state that makes Yb2GaSbO7 a promising candidate for disorder-induced spin-liquid or spin-singlet behaviour. This state is quite fragile, being tuned to a splayed ferromagnet in a modest magnetic field μ0Hc ~ 1.5 T. |
| Databáze: | OpenAIRE |
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