Magnetic phase diagram of the quantum spin chain compound SrCo2V2O8: a single-crystal neutron diffraction study

Shen, L.; Zaharko, O.; Birk, Jonas Okkels; Jellyman, E.; He, Zhidong; Blackburn, E.

doi:10.1088/1367-2630/ab2b7a

Cited by 16 publications

(24 citation statements)

References 34 publications

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“…Fortunately, the TLL behavior survives in the SRTAF phase, as evidenced by the power-law temperature dependence of the spin-lattice relaxation rate 1/T 1 . The Luttinger exponent η is found to decrease from above 1 to below 1 when the field increases across about 7 T. This η inversion suggests the dominant spin fluctuations change from longitudinal to transverse with increasing the field, which supports the LSDW to TAF phase transition observed by neutron scattering 17 .…”

Section: Introductionsupporting

confidence: 67%

“…At zero magnetic field, it is antiferromagnetically ordered at about 5 K with Ising moments pointing along the c axis. Within each layer of the ab plane, the moments among the diagonal chains are antiparallel as a consequence of the interchain couplings [15][16][17] .…”

Section: Introductionmentioning

confidence: 99%

“…In real materials, the interchain couplings are present, and a longitudinal spin density wave (LSDW) state and a transverse antiferromagnetic (TAF) state can be stabilized sequentially at finite temperatures with increasing fields. These phases have been investigated in BaCo 2 V 2 O 8 and SrCo 2 V 2 O 8 by elastic neutron scattering studies where the LSDW phase is shown to exist in a narrow field range from 4 T to 9 T for BaCo 2 V 2 O 8 [20][21][22] and from 4 T to 7 T for SrCo 2 V 2 O 8 17 , respectively, and the TAF phase is expected to emerge at higher fields 17,20,21 .…”

Section: Introductionmentioning

confidence: 99%

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Field-induced antiferromagnetism and Tomonaga-Luttinger liquid behavior in the quasi-one-dimensional Ising-Antiferromagnet SrCo2V2O8

Cui,

Fan,

et al. 2022

Preprint

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We investigate the low-temperature properties of the Ising-like screw chain antiferromagnet SrCo2V2O8 under a longitudinal magnetic field by susceptibility and 51 V NMR measurements. The bulk susceptibility χ shows an onset of long-range Ising-antiferromagnetic (AFM) order and the suppression of the order by field with the Néel temperature dropped from 5.1 K to 2 K when field increases from 0.1 T to 4 T. The suppression of the AFM order by the field is also observed by the NMR spectra and the spin-lattice relaxation 1/T1. At fields above 4 T, χ shows a low-temperature upturn, which is consistent with the onset of a transverse antiferromagnetic order as supported by the quantum Monte Carlo simulations. A line splitting in the NMR spectra is also observed at high temperatures. We show that the line split characterizes the onset of a short-range transverse antiferromagnetic order with magnetic moments orientated along the crystalline [110]/[1 10] directions. The 1/T1 data at higher temperature show a power-law behavior 1/T1∼T α , which is consistent with the Tomonaga-Luttinger-liquid behavior. With increasing the field, the power-law exponent α changes from negative to positive, which clearly shows an inversion of the Luttinger exponent η, where the dominant low-energy spin fluctuations switch from the longitudinal type to the transverse type at a high field of 7 T.

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Section: Introductionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Field-induced antiferromagnetism and Tomonaga-Luttinger liquid behavior in the quasi-one-dimensional Ising-Antiferromagnet SrCo2V2O8

Cui,

Fan,

et al. 2022

Preprint

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“…We note that the formation of an SDW was also observed in other quasi one-dimensional spin systems, for example, BaCo 2 V 2 O 8 and SrCo 2 V 2 O 8 [91,92]. The appearance of an SDW phase in these materials is also related to the anisotropy of the exchange interactions, however the ultimate origin is related to the Ising-like anisotropy within the intra-chain exchange interaction, unlike the interchain coupling in YbAlO 3 .…”

Section: Theoretical Descriptionsupporting

confidence: 50%

Low-energy spin dynamics in rare-earth perovskite oxides

Podlesnyak,

Nikitin,

Ehlers

2021

Preprint

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We review recent studies of spin dynamics in rare-earth orthorhombic perovskite oxides of the type RM O 3 , where R is a rare-earth ion and M is a transition-metal ion, using single-crystal inelastic neutron scattering (INS). After a short introduction to the magnetic INS technique in general, the results of INS experiments on both transition-metal and rare-earth subsystems for four selected compounds (YbFeO 3 , TmFeO 3 , YFeO 3 , YbAlO 3 ) are presented. We show that the spectrum of magnetic excitations consists of two types of collective modes that are well separated in energy: gapped magnons with a typical bandwidth of <70 meV, associated with the antiferromagnetically (AFM) ordered transition-metal subsystem, and AFM fluctuations of <5 meV within the rareearth subsystem, with no hybridization of those modes. We discuss the highenergy conventional magnon excitations of the 3d subsystem only briefly, and focus in more detail on the spectacular dynamics of the rare-earth sublattice in these materials. We observe that the nature of the ground state and the lowenergy excitation strongly depends on the identity of the rare-earth ion. In the case of non-Kramers ions, the low-symmetry crystal field completely eliminates the degeneracy of the multiplet state, creating a rich magnetic field-temperature phase diagram. In the case of Kramers ions, the resulting ground state is at least a doublet, which can be viewed as an effective quantum spin-1/2. Equally important is the fact that in Yb-based materials the nearest-neighbor exchange interaction dominates in one direction, despite the three-dimensional nature of the orthoperovskite crystal structure. The observation of a fractional spinon continuum and quantum criticality in YbAlO 3 demonstrates that Kramers rareearth based magnets can provide realizations of various aspects of quantum lowdimensional physics.

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“…Below 7 T, the 51 V spectra have six peaks. Such a line splitting is caused by twinned magnetic domains in the Ising ordered phase originating from frustrated interchain exchange couplings [31,[35][36][37]; In the intermediate field range from 7 to 7.7 T, a single NMR line is seen close to the central frequency f ≈ 51 γH, which suggests the absence of magnetic ordering; At fields above 7.7 T, two NMR lines, labeled as &1 and &2, emerge and are resolvable at temperatures above 10 K (Fig. S8 [31]).…”

mentioning

confidence: 99%

Quantum Criticality of the Ising-like Screw Chain Antiferromagnet SrCo2V2O
Cui
¹
,
Zou
²
,
Xi
³

et al. 2019
Phys. Rev. Lett.
52
5
38
2
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Recently, a class of Ising anisotropic antiferromagnetic screw chain compounds ACo 2 V 2 O 8 (A =Ba,Sr) [16,17] attracts a lot of research attention. In these compounds, the easy-axis is along the chain direction (c-axis), and the intrachain exchange coupling J z ≈ 5-7 meV [18,19]. Both compounds order at fairly low temperatures (about 5 K), which implies the interchain exchange coupling J ′ ≪ J [20][21][22]. The magnetic order can be suppressed by a transverse field applied in the ab-plane [16,17]. Interestingly, the critical field values and the quantum critical behaviors are very different for fields applied along the [100] and the [110] direction [19,[23][24][25][26][27][28][29]. In BaCo 2 V 2 O 8 , separated 3D and 1D QCPs were suggested with field along the [110] direction at H 20 T [28]. For the field along the [100] direction, H C ∼ 10 T [24], much lower

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Magnetic phase diagram of the quantum spin chain compound SrCo₂V₂O₈: a single-crystal neutron diffraction study

Cited by 16 publications

References 34 publications

Field-induced antiferromagnetism and Tomonaga-Luttinger liquid behavior in the quasi-one-dimensional Ising-Antiferromagnet SrCo2V2O8

Field-induced antiferromagnetism and Tomonaga-Luttinger liquid behavior in the quasi-one-dimensional Ising-Antiferromagnet SrCo2V2O8

Low-energy spin dynamics in rare-earth perovskite oxides

Quantum Criticality of the Ising-like Screw Chain Antiferromagnet SrCo2V2O
Cui
¹
,
Zou
²
,
Xi
³

et al. 2019
Phys. Rev. Lett.
52
5
38
2
View full text Add to dashboard Cite

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Magnetic phase diagram of the quantum spin chain compound SrCo2V2O8: a single-crystal neutron diffraction study

Cited by 16 publications

References 34 publications

Field-induced antiferromagnetism and Tomonaga-Luttinger liquid behavior in the quasi-one-dimensional Ising-Antiferromagnet SrCo2V2O8

Field-induced antiferromagnetism and Tomonaga-Luttinger liquid behavior in the quasi-one-dimensional Ising-Antiferromagnet SrCo2V2O8

Low-energy spin dynamics in rare-earth perovskite oxides

Quantum Criticality of the Ising-like Screw Chain Antiferromagnet SrCo2V2OCui1, Zou2, Xi3 et al. 2019Phys. Rev. Lett.525382View full textAdd to dashboardCite

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Magnetic phase diagram of the quantum spin chain compound SrCo₂V₂O₈: a single-crystal neutron diffraction study

Quantum Criticality of the Ising-like Screw Chain Antiferromagnet SrCo2V2O
Cui
¹
,
Zou
²
,
Xi
³

et al. 2019
Phys. Rev. Lett.
52
5
38
2
View full text Add to dashboard Cite