Possible gapless spin liquid in the rare-earth kagome lattice magnet 
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Ding, Z. F.; Yang, Yunkun; Zhang, Jian; Tan, Cheng; Zhu, Zhiwei; Chen, Gang; Shu, Lei

doi:10.1103/physrevb.98.174404

Cited by 22 publications

(37 citation statements)

References 88 publications

(105 reference statements)

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“…Furthermore, a spin glass state is favored by the presence of a disordered magnetic lattice of S = 3/2 and effective S = 1/2 spins as suggested by our structural analysis. However, large jumps of λ can be found as well for PbCuTe 2 O 6 [20] or Tm 3 Sb 3 Zn 2 O 14 [22], which are all recently proposed spin liquid candidates, presenting a characteristic large λ of about ≈ 1.0µs −1 at low-T , as in the present case. The steep increase in λ suggests a glass transition temperature (T g ) of about T g ≈ 1 − 2 K and this must be contrasted with the frequency independence of χ (T ), specially in the region 1.8−3 K. Certainly, χ (T ) measurements down to lower temperatures are needed for a more conclusive statement.…”

Section: B µSr Zf and Lf Experimentssupporting

confidence: 72%

Dynamic magnetism in the disordered hexagonal double perovskite BaTi1/2Mn1/2O3

et al. 2019

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Magnetic frustration and disorder are key ingredients to prevent the onset of magnetic order. In the disordered hexagonal double perovskite BaTi 1/2 Mn 1/2 O3, Mn 4+ cations, with S = 3/2 spins, can either form highly correlated states of magnetic trimers or dimers or remain as weakly interacting orphan spins. At low temperature (T ), the dimer response is negligible, and magnetism is dominated by the trimers and orphans. To explore the role of magnetic frustration, disorder and possibly of quantum fluctuations, the low-T magnetic properties of the remaining magnetic degrees of freedom of BaTi 1/2 Mn 1/2 O3 are investigated. Heat-capacity data and magnetic susceptibility display no evidence for a phase transition to a magnetically ordered phase but indicate the formation of a correlated spin state. The low-temperature spin dynamics of this state is then explored by µSR experiments. The zero field µ + relaxation rate data show no static magnetism down to T = 19 mK and longitudinal field experiments support as well that dynamic magnetism persists at low T . Our results are interpreted in terms of a spin glass state which stems from a disordered lattice of orphans spins and trimers. A spin liquid state in BaTi 1/2 Mn 1/2 O3, however, is not excluded and is also discussed.

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Section: B µSr Zf and Lf Experimentssupporting

confidence: 72%

Dynamic magnetism in the disordered hexagonal double perovskite BaTi1/2Mn1/2O3

et al. 2019

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“…Quite recently, frustrated materials with magnetic rare-earth ions are proposed to be promising QSL candidates [20]. These include the well-known pyrochlore ice materials [21][22][23][24][25][26][27][28][29][30], the kagome magnet [31,32], and the triangular lattice magnets [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. The local degree of freedom for the rare-earth ions that contain an odd number of 4f electrons (excluding Gd 3+ ), is a Kramers doublet and can be mapped to an effective spin S = 1/2 degree of freedom.…”

mentioning

confidence: 99%

Rare-Earth Chalcogenides: A Large Family of Triangular Lattice Spin Liquid Candidates

Liu¹,

Zhang²,

Ji³

et al. 2018

Chinese Phys. Lett.

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180

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Frustrated quantum magnets are expected to host many exotic quantum spin states like quantum spin liquid (QSL), and have attracted numerous interest in modern condensed matter physics. The discovery of the triangular lattice spin liquid candidate YbMgGaO4 stimulated an increasing attention on the rare-earth-based frustrated magnets with strong spin-orbit coupling. Here we report the synthesis and characterization of a large family of rare-earth chalcogenides AReCh2 (A = alkali or monovalent ions, Re = rare earth, Ch = O, S, Se). The family compounds share the same structure (R3m) as YbMgGaO4, and antiferromagnetically coupled rare-earth ions form perfect triangular layers that are well separated along the c-axis. Specific heat and magnetic susceptibility measurements on NaYbO2, NaYbS2 and NaYbSe2 single crystals and polycrystals, reveal no structural or magnetic transition down to 50mK. The family, having the simplest structure and chemical formula among the known QSL candidates, removes the issue on possible exchange disorders in YbMgGaO4. More excitingly, the rich diversity of the family members allows tunable charge gaps, variable exchange coupling, and many other advantages. This makes the family an ideal platform for fundamental research of QSLs and its promising applications.PACS numbers: 75.10. Kt, 75.30.Et, 75.30.Gw Introduction.-The concept of quantum spin liquids (QSLs) was originally proposed by P. W. Anderson theoretically over 40 years ago [1]. It describes a highly entangled quantum state for spin degrees of freedom and was initially constructed with a superposition of spin singlets on the triangular antiferromagnet, so-called resonatingvalence-bond state [1]. Later on, the possible connection between QSLs and high-temperature superconductivity was theoretically established through doping a QSL Mott insulator [2]. Although the underlying mechanism for the high-temperature superconductivity has not yet come into a consensus, our understanding of QSLs has greatly improved, both from exactly solvable models [3,4] and several classification schemes [4,5]. On the experimental side, various frustrated magnetic materials, particularly the triangular-lattice-based antiferromagnets, were considered to be the most promising systems to realize QSLs [6]. So far, a number of compounds have been reported to host QSLs. Among them, the well-known ones include herbertsmithite and its derived compounds [7][8][9][10][11][12][13][14], and triangular organics [15][16][17][18][19]. The magnetic ions in most of these compounds are 3d transition metal ions Cu 2+ with S = 1/2, which may be crucial to enhance quantum fluctuations.Quite recently, frustrated materials with magnetic rare-earth ions are proposed to be promising QSL candidates [20]. These include the well-known pyrochlore ice materials [21][22][23][24][25][26][27][28][29][30], the kagome magnet [31,32], and the triangular lattice magnets [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. The local degree

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“…To further explore the quantum properties on the frustrated system, we turn to a specific frustrated lattice that is Kagome lattice. Apparently, the tripod rare-earth Kagome magnets have already existed [21][22][23][24] . Moreover, the rare-earth Kagome magnets can be obtained from the rare-earth pyrochlore magnets from the dimensional reduction by applying an external magnetic field along the [111] crystallographic direction that polarizes one sublattice [25][26][27] .…”

Section: 19mentioning

confidence: 99%

“…We start with a brief introduction of the rare-earth tripod Kagome magnet A 2 RE 3 Sb 3 O 14 where A = Mg, Zn and RE refers to the rare-earth atom (Pr, Nd, Gd, Tb, Dy, Ho, Er, Yb, Tm) [21][22][23][24] . Various interesting phases and results have already been suggested for this new family of materials.…”

Section: Kagome Lattice Transverse Field Ising Modelmentioning

confidence: 99%

Intrinsic transverse field in frustrated quantum Ising magnets: Physical origin and quantum effects

Chen

2019

Phys. Rev. Research

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Transverse field Ising model is a common model in quantum magnetism and is often illustrated as an example for quantum phase transition. Its physical origin in quantum magnets, however, is actually not quite well-understood. The quantum mechanical properties of this model on frustrated systems are not well-understood either. We here clarify the physical origin, both extrinsic one and intrinsic one, for the transverse field of the quantum Ising model, and then explain the quantum effects in the Kagome system. We discuss the quantum plaquette order and the quantum phase transition out of this ordered state in the rare-earth Kagome magnets. Our specific results can find their relevance in the rare-earth tripod Kagome magnets.

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Possible gapless spin liquid in the rare-earth kagome lattice magnet Tm3Sb3Zn2O14

Cited by 22 publications

References 88 publications

Dynamic magnetism in the disordered hexagonal double perovskite BaTi1/2Mn1/2O3

Dynamic magnetism in the disordered hexagonal double perovskite BaTi1/2Mn1/2O3

Rare-Earth Chalcogenides: A Large Family of Triangular Lattice Spin Liquid Candidates

Intrinsic transverse field in frustrated quantum Ising magnets: Physical origin and quantum effects

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