Stripe order and spin dynamics in the triangular-lattice antiferromagnet 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>KErSe</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>
: A single-crystal study with a theoretical description

Ding, Gaofeng; Wo, Hongliang; Luo, Rui Leonard; Gu, Yimeng; Gu, Yiqing; Bewley, Robert; Chen, Gang; Zhao, Jun

doi:10.1103/physrevb.107.l100411

Cited by 6 publications

(3 citation statements)

References 39 publications

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“…This family of materials crystallizes into a delafossite structure with space group R-3m or P 6 3 /mmc, while the trivalent R 3+ ions reside in a local environment with D 3d symmetry. Tremendous investigations on Yb 3+ - [28][29][30][31][32][33][34][35][36][37], Er 3+ - [38][39][40], and Ce 3+based [41][42][43] 112-family magnets have been reported, including massive precise knowledge of the CEF excitations in them [44][45][46][47][48][49][50][51]. However, while the majority of studies focus on materials in which the triangular lattice is formed by Kramers ions in ARCh 2 family, research on compounds featuring non-Kramers ions is rather limited.…”

Section: Introductionmentioning

confidence: 99%

The Shanghai alliance of multilingual researchers: Fudan University, Tongji University, Shanghai University of Finance and Economics, and Shanghai International Studies University, China

et al. 2022

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Patient-independent detection of epileptic activities based on visual spectral representation of continuous EEG (cEEG) has been widely used for diagnosing epilepsy. However, precise detection remains a considerable challenge due to subtle variabilities across subjects, channels and time points. Thus, capturing fine-grained, discriminative features of EEG patterns, which is associated with high-frequency textural information, is yet to be resolved. In this work, we propose Scattering Transformer (ScatterFormer), an invariant scattering transform-based hierarchical Transformer that specifically pays attention to subtle features. In particular, the disentangled frequency-aware attention (FAA) enables the Transformer to capture clinically informative high-frequency components, offering a novel clinical explainability based on visual encoding of multichannel EEG signals. Evaluations on two distinct tasks of epileptiform detection demonstrate the effectiveness our method. Our proposed model achieves median AUCROC and accuracy of 98.14%, 96.39% in patients with Rolandic epilepsy. On a neonatal seizure detection benchmark, it outperforms the state-of-the-art by 9% in terms of average AUCROC.

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Section: Introductionmentioning

confidence: 99%

The Shanghai alliance of multilingual researchers: Fudan University, Tongji University, Shanghai University of Finance and Economics, and Shanghai International Studies University, China

et al. 2022

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“…To describe the dispersive modes, we expanded the CEF Hamiltonian into an effective magnetic Hamiltonian, accounting for the effective moments and anisotropic exchange interactions simultaneously. When establishing the Hamiltonian, an XXZ model is adopted due to the quasi-2D nature of NaTmTe 2 [1,2,21,22],…”

Section: Simulations and Discussionmentioning

confidence: 99%

“…The successful applications of TFIM provide an ideal platform for realizing quantum states in non-Kramers compounds, where the low-temperature magnetism is completely different from the Kramers systems [2][3][4][18][19][20][21][22][23]. Importantly, simulations based on quantum Monte Carlo methods have predicted (e) Magnetic susceptibility from 1.8 K to 300 K in two directions under 1 T; no splitting is found between FC and ZFC data.…”

Section: Introductionmentioning

confidence: 99%

Interplay between crystal field and magnetic anisotropy in the triangular-lattice antiferromagnet NaTmTe2

Zheng,

Gu,

et al. 2024

Phys. Rev. B

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We have successfully synthesized a triangular lattice magnet, NaTmTe 2 , and conducted thermodynamic and inelastic neutron scattering (INS) investigations using single-crystal samples. Our magnetic susceptibility χ (T ) measurements indicate antiferromagnetic interactions between Tm 3+ moments. In our INS experiments, we observe a series of dispersive crystal electric field (CEF) excitations. These dispersions could be attributed to quantum tunneling effects arising from anisotropic spin exchange interactions, spontaneously establishing connections between distinct CEF states. Additionally, the field-dependent behavior of the CEF states exhibits pronounced nonlinear characteristics, suggestive of quantum fluctuations within the rare-earth moments. Utilizing the mean field technology of the random phase approximation, we compute the magnetic excitation spectra and thermodynamic properties, unveiling the emergence of a unique ground state primarily driven by quantum effects.

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The thermally assisted magnetization and dielectric relaxation in spin frustrated Ca3Co2O6

Gong,

Duan,

Wang

et al. 2024

Journal of Alloys and Compounds

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Stripe order and spin dynamics in the triangular-lattice antiferromagnet KErSe2 : A single-crystal study with a theoretical description

Cited by 6 publications

References 39 publications

The Shanghai alliance of multilingual researchers: Fudan University, Tongji University, Shanghai University of Finance and Economics, and Shanghai International Studies University, China

The Shanghai alliance of multilingual researchers: Fudan University, Tongji University, Shanghai University of Finance and Economics, and Shanghai International Studies University, China

Interplay between crystal field and magnetic anisotropy in the triangular-lattice antiferromagnet NaTmTe2

The thermally assisted magnetization and dielectric relaxation in spin frustrated Ca3Co2O6

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