Magnetism on ideal triangular lattices in 
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Guo, Shu; Ghasemi, Amir Faraz; Broholm, C.; Cava, R. J.

doi:10.1103/physrevmaterials.3.094404

Cited by 30 publications

(25 citation statements)

References 28 publications

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“…1(b)). A similar directional anisotropy and broad peak are also reported for another Yb-based triangular system NaBaYb(BO 3 ) 2 [24].…”

supporting

confidence: 82%

“…A qualitative agreement of observed effective magnetic moments at ambient temperature and the expected values, in addition to the significant reduction of magnetic moment at low temperature, suggest that the Yb ions enter the Kramers doublet ground state at low temperature [21,22,24]. Considering J ef f = 1 2 in Ba 3 Yb(BO 3 ) 3 [17], the obtained g ab 2.19 and g c 3.38 values suggest a significant anisotropy at low temperature range.…”

supporting

confidence: 77%

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Realization of Quantum Dipoles in Triangular Lattice Crystal Ba3Yb(BO3)3

Bag,

Ennis,

Liu

et al. 2021

Preprint

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We investigate the thermodynamic properties of the ytterbium-based triangular lattice compound Ba3Yb(BO3)3. The results demonstrate the absence of any long-range ordering down to 56 mK. Analysis of the magnetization, susceptibility and specific heat measurements suggests that Ba3Yb(BO3)3 may realize a S = 1 2 quantum dipole lattice, in which the dominant interaction is the long range dipole-dipole coupling on the geometrically frustrated triangular lattice, and exchange interactions are subdominant or negligible.

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“…1(b)). A similar directional anisotropy and broad peak are also reported for another Yb-based triangular system NaBaYb(BO 3 ) 2 [24].…”

supporting

confidence: 82%

supporting

confidence: 77%

Realization of Quantum Dipoles in Triangular Lattice Crystal Ba3Yb(BO3)3

Bag,

Ennis,

Liu

et al. 2021

Preprint

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“…These results contribute to the rapidly growing set of lanthanide–alkaline earth borates with low-dimensional structures and novel magnetic properties, such as the Sr 6 Ln Fe(BO 3 ) 6 , Ba 3 Ln (BO 3 ) 3 , and A Ba Ln (BO 3 ) 2 ( A = Na + , K + , Rb + ) structural families. 31 , 38 , 48 − 51 Furthermore, the Ca 4 Ln O(BO 3 ) 3 structure type is compositionally flexible, which should allow for the realization of novel low-dimensional magnetic lattices through chemical substitution.…”

Section: Discussionmentioning

confidence: 99%

Magnetic Properties of Quasi-One-Dimensional Lanthanide Calcium Oxyborates Ca₄LnO(BO₃)₃

Kelly

2020

Inorg. Chem.

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This study examines the lanthanide calcium oxyborates Ca 4 Ln O(BO 3 ) 3 ( Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y, Er, Yb). The reported monoclinic structure (space group Cm ) was confirmed using powder X-ray diffraction. The magnetic Ln 3+ ions are situated in well-separated chains parallel to the c axis in a quasi-one-dimensional array. Here we report the first bulk magnetic characterization of Ca 4 Ln O(BO 3 ) 3 using magnetic susceptibility χ( T ) and isothermal magnetization M ( H ) measurements at T ≥ 2 K. With the sole exception of Ca 4 TbO(BO 3 ) 3 , which displays a transition at T = 3.6 K, no magnetic transitions occur above 2 K, and Curie–Weiss analysis indicates antiferromagnetic nearest-neighbor interactions for all samples. Calculation of the magnetic entropy change ΔS m indicates that Ca 4 GdO(BO 3 ) 3 and Ca 4 HoO(BO 3 ) 3 are viable magnetocaloric materials at liquid helium temperatures in the high-field and low-field regimes, respectively.

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“…It must also be noted that the effective exchange constants J and J ⊥ in the NaYbCh 2 materials are comparatively large for an Yb 3+ triangular lattice. In YbMgGaO 4 , NaBaYb(BO 3 ) 2 and Rb 3 Yb(PO 4 ) 2 the lowtemperature Curie-Weiss temperatures and thus the exchange constants are more than one order of magnitude smaller compared to the NaYbCh 2 system [53,[79][80][81]. In this sense, these other systems with small exchange couplings can be regarded as nearly-single-ion systems (without significant exchange coupling between the ions).…”

Section: Summary and Concluding Remarksmentioning

confidence: 99%

Yb delafossites: unique exchange frustration of 4f spin 1/2 moments on a perfect triangular lattice

Schmidt,

Sichelschmidt,

Ranjith

et al. 2021

Preprint

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While the Heisenberg model for magnetic Mott insulators on planar lattice structures is comparatively well understood in the case of transition metal ions, the intrinsic spin-orbit entanglement of 4f magnetic ions on such lattices shows fascinating new physics largely due to corresponding strong anisotropies both in their single-ion and their exchange properties. We show here that the Yb delafossites, containing perfect magnetic Yb 3+ triangular lattice planes with pseudospin s = 1/2 at low temperatures, are an ideal platform to study these new phenomena. Competing frustrated interactions may lead to an absence of magnetic order associated to a gapless spin liquid ground state with a huge linear specific heat exceeding that of many heavy fermions, whereas the application of a magnetic field induces anisotropic magnetic order with successive transitions into different long ranged ordered structures. In this comparative study, we discuss our experimental findings in terms of a unified crystal-field and exchange model. We combine electron paramagnetic resonance (EPR) experiments and results from neutron scattering with measurements of the magnetic susceptibility, isothermal magnetization up to full polarization, and specific heat to determine the relevant model parameters. The impact of the crystal field is discussed as well as the symmetry-compatible form of the exchange tensor, and we give explicit expressions for the anisotropic g factor, the temperature dependence of the susceptibility, the exchange-narrowed EPR linewidth and the saturation field.

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Magnetism on ideal triangular lattices in NaBaYb(BO3)2

Cited by 30 publications

References 28 publications

Realization of Quantum Dipoles in Triangular Lattice Crystal Ba3Yb(BO3)3

Realization of Quantum Dipoles in Triangular Lattice Crystal Ba3Yb(BO3)3

Magnetic Properties of Quasi-One-Dimensional Lanthanide Calcium Oxyborates Ca₄LnO(BO₃)₃

Yb delafossites: unique exchange frustration of 4f spin 1/2 moments on a perfect triangular lattice

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Magnetism on ideal triangular lattices in NaBaYb(BO3)2

Cited by 30 publications

References 28 publications

Realization of Quantum Dipoles in Triangular Lattice Crystal Ba3Yb(BO3)3

Realization of Quantum Dipoles in Triangular Lattice Crystal Ba3Yb(BO3)3

Magnetic Properties of Quasi-One-Dimensional Lanthanide Calcium Oxyborates Ca4LnO(BO3)3

Yb delafossites: unique exchange frustration of 4f spin 1/2 moments on a perfect triangular lattice

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Magnetic Properties of Quasi-One-Dimensional Lanthanide Calcium Oxyborates Ca₄LnO(BO₃)₃