Frustrated Heisenberg 
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 model within the stretched diamond lattice of 
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Bordelon, Mitchell M.; Liu, Chunxiao; Posthuma, Lorenzo; Kenney, Eric; Graf, M. J.; Butch, N. P.; Banerjee, Arnab; Calder, Stuart; Wilson, Stephen D.

doi:10.1103/physrevb.103.014420

Cited by 23 publications

(17 citation statements)

References 63 publications

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“…Magnetic frustration in materials with the H −1 connectivity is probable in crystal symmetries lower than cubic. Such a 'stretched' diamond lattice has previously been described for tetragonal LiYbO 2 , which has an incommensurate spiral magnetic order [16], and NaCeO 2 with A-type antiferromagnetic order [17]. The H −1 network also occurs in the fergusonite (monoclinic, M ) and scheelite (tetragonal, T ) polymorphs of the oxides LnTaO 4 and LnNbO 4 , of which the former is the subject of this experimental study.…”

Section: Introductionmentioning

confidence: 69%

“…We report the magnetic behaviour of a new family of Ln 3+ oxides containing a stretched diamond lattice. Other such materials include the alkali metal-lanthanide oxides NaLnO 2 (Ln = Ce, Nd, Sm, Eu, Gd) and LiLnO 2 (Ln = Er, Yb), which crystallize in the tetragonal space group I4 1 /amd [16,17,65]. The observation of the stretched diamond lattice in monoclinic LnTaO 4 materials provides a new opportunity to study the interplay of the crystal electric field with competing J 1 and J 2 magnetic interactions.…”

Section: Discussionmentioning

confidence: 99%

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Magnetism on the stretched diamond lattice in lanthanide orthotantalates

Kelly,

Yuan,

Pearson

et al. 2022

Preprint

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The magnetic Ln 3+ ions in the fergusonite and scheelite crystal structures form a truncated hyperhoneycomb net that can be labelled as H −1 by analogy with the harmonic honeycomb series H N [Modic et al., Nat. Commun. 5, 4203 (2014)]. This H −1 magnetic lattice is an elongated form of the diamond lattice and is therefore predicted to host exotic magnetic ground states. In this study, polycrystalline samples of the fergusonite orthotantalates M -LnTaO4 (Ln = Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er) are synthesized and then characterized using powder diffraction and bulk magnetometry and heat capacity. TbTaO 4 orders antiferromagnetically at 2.25 K into a commensurate magnetic cell with k = 0, magnetic space group 14.77 (P 21 /c) and Tb moments parallel to the a-axis. No magnetic order was observed in the other materials studied, leaving open the possibility of exotic magnetic states at T < 2 K.

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Section: Introductionmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Magnetism on the stretched diamond lattice in lanthanide orthotantalates

Kelly,

Yuan,

Pearson

et al. 2022

Preprint

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“…Intramultiplet transition probabilities and g tensor components were calculated from the resulting wave functions. These values were then fit to integrated intensity ratios of the two excitations in the INS data and the g-factor components from EPR data by following the minimization procedure reported in Bordelon et al [40]. The results are presented in Table II, and the final fit of the CEF scheme contains a superposition of m j = 1/2 and m j = 5/2 angular momentum states that yield anisotropic g factor components of g // = 0.2910 and g ⊥ = 1.9973.…”

Section: B Crystalline Electric Field Excitationsmentioning

confidence: 99%

“…For example, swapping Tm 3+ for Yb 3+ in the YbMgGaO 4 structure results in multipolar, three-sublattice order [37][38][39]. Another, recent rare earth QSL candidate, NaYbO 2 , is a member of a much larger series of ARX 2 (A = alkali, R = rare earth, X = chalcogenide) compounds, and a large number of these compounds with varying R-sites crystallize within the same R 3m triangular lattice structure [11,[28][29][30][31][32][33][34][35][36][40][41][42][43][44][45][46]. This invites exploration of the effect of tuning the character of the R-site magnetic ion in NaYbO 2 and exploring the response on its quantum disordered ground state.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties and signatures of moment ordering in triangular lattice antiferromagnet KCeO$_2$

Bordelon,

Wang,

Pajerowski

et al. 2021

Preprint

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The magnetic ground state and the crystalline electric field level scheme of the triangular lattice antiferromagnet KCeO2 are investigated. Below TN = 300 mK, KCeO2 develops signatures of magnetic order in specific heat measurements and low energy inelastic neutron scattering data. Trivalent Ce 3+ ions in the D 3d local environment of this compound exhibit large splittings among the lowest three 4f 1 Kramers doublets defining for the free ion the J = 5/2 sextet and a ground state doublet with dipole character, consistent with recent theoretical predictions in M. S. Eldeeb et al. Phys. Rev. Materials 4, 124001 (2020). An unexplained, additional local mode appears, and potential origins of this anomalous mode are discussed.

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“…Among the most recently studied Yb 3+ triangular magnetic lattices, the delafossite structure (112-structure type) ARQ 2 (A = Li, Na, K, Rb, Cs, Tl, Ag, Cu; R = rare earth; Q = O, S, Se, Te) attracts widespread attention in search of QSL candidates. [33][34][35][36][37][38] The high symmetry of ARQ 2 structures is reported to have different packing structures, where rare earth ions form 2D triangular lattice. However, depending upon the A-site cation, ARQ 2 structure could crystallize in different space groups.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Anisotropic Magnetism in Quantum Spin Liquid Candidates $A$YbSe$_2$ ($A$ = K and Rb)

Xing,

Sanjeewa,

May

et al. 2021

Preprint

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Quantum spin liquid (QSL) state in rare-earth triangular lattice has attracted much attention recently due to its potential application in quantum computing and communication. Here we report the single-crystal growth synthesis, crystal structure characterizations and magnetic properties of AYbSe 2 (A= K, Rb) compounds. The X-ray diffraction analysis shows that AYbSe 2 (A = K and Rb) crystallizes in a trigonal space group, R-3m (No. 166) with Z = 3. AYbSe 2 possesses a two-dimensional (2D) Yb-Se-Yb layered structure formed by edged-shared YbSe 6 octahedra. The magnetic properties are highly anisotropic for both title compounds and no long-range order is found down to 0.4 K, revealing the possible QSL ground state in these compounds. The isothermal magnetization exhibits one-third magnetization plateau when the magnetic fields are applied in ab-plane. Heat capacity is performed along both ab-plane and c-axis, and features the characteristic dome for triangular magnetic lattice compounds as a function of magnetic fields. Due to the change of the interlayer and intralayer distance of Yb 3+ , the dome shifts to low fields from KYbSe 2 to RbYbSe 2 . All these results indicate the AYbSe 2 family presents unique frustrated magnetism close to the possible QSL and noncolinear spin states.

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Frustrated Heisenberg J1−J2 model within the stretched diamond lattice of LiYbO2

Cited by 23 publications

References 63 publications

Magnetism on the stretched diamond lattice in lanthanide orthotantalates

Magnetism on the stretched diamond lattice in lanthanide orthotantalates

Magnetic properties and signatures of moment ordering in triangular lattice antiferromagnet KCeO$_2$

Synthesis and Anisotropic Magnetism in Quantum Spin Liquid Candidates $A$YbSe$_2$ ($A$ = K and Rb)

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