Tomonaga-Luttinger liquid behavior and spinon confinement in YbAlO3

Wu, L. S.1,2; Nikitin, S. E.3,4; Wang, Z.5; Zhu, W.6,7; Batista, C. D.5,8; Tsvelik, A. M.9; Samarakoon, A. M.1; Tennant, D. A.8,10; Brando, M.3; Vasylechko, L.11; Frontzek, M.1; Savici, A. T.1; Sala, G.1; Ehlers, G.12; Christianson, A. D.1,10; Lumsden, M. D.1; Podlesnyak, A.1

2019-02-11

10.1038/s41467-019-08485-7

Nature Communications   影响因子和分区

2041-1723

Low dimensional quantum magnets are interesting because of the emerging collective behavior arising from strong quantum fluctuations. The one-dimensional (1D) S = 1/2 Heisenberg antiferromagnet is a paradigmatic example, whose low-energy excitations, known as spinons, carry fractional spin S = 1/2. These fractional modes can be reconfined by the application of a staggered magnetic field. Even though considerable progress has been made in the theoretical understanding of such magnets, experimental realizations of this lowdimensional physics are relatively rare. This is particularly true for rare-earth-based magnets because of the large effective spin anisotropy induced by the combination of strong spin-orbit coupling and crystal field splitting. Here, we demonstrate that the rare-earth perovskite YbAlO3 provides a realization of a quantum spin S = 1/2 chain material exhibiting both quantum critical Tomonaga-Luttinger liquid behavior and spinon confinement-deconfinement transitions in different regions of magnetic field-temperature phase diagram.

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DOE Office of Science User Facility[DE-AC05-00OR22725]

Science & Technology - Other Topics

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1.Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany
4.Tech Univ Dresden, Inst Festkorper & Mat Phys, D-01069 Dresden, Germany
5.Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
6.Westlake Inst Adv Study, Hangzhou 310024, Zhejiang, Peoples R China
7.Los Alamos Natl Lab, Theoret Div, T 4 & CNLS, Los Alamos, NM 87545 USA
8.Oak Ridge Natl Lab, Shull Wollan Ctr, Oak Ridge, TN 37831 USA
9.Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Div, Upton, NY 11973 USA
10.Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA
11.Lviv Polytech Natl Univ, UA-79013 Lvov, Ukraine
12.Oak Ridge Natl Lab, Neutron Technol Div, Oak Ridge, TN 37831 USA

Wu, L. S.,Nikitin, S. E.,Wang, Z.,et al. Tomonaga-Luttinger liquid behavior and spinon confinement in YbAlO3[J]. Nature Communications,2019,10.

Wu, L. S..,Nikitin, S. E..,Wang, Z..,Zhu, W..,Batista, C. D..,...&Podlesnyak, A..(2019).Tomonaga-Luttinger liquid behavior and spinon confinement in YbAlO3.Nature Communications,10.

Wu, L. S.,et al."Tomonaga-Luttinger liquid behavior and spinon confinement in YbAlO3".Nature Communications 10(2019).