Multistage development of anisotropic magnetic correlations in the Co-based honeycomb lattice 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Na</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Co</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>TeO</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>

Lee, C. H.; Lee, S.; Choi, Y. S.; Jang, Z. H.; Kalaivanan, R.; Sankar, Raman; Choi, Kwang‐Yong

doi:10.1103/physrevb.103.214447

Cited by 28 publications

(7 citation statements)

References 33 publications

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“…The details of the magnetic phase transition critical temperatures with different magnetic field are listed in table 1. The results were corresponding to previous literature [9]. Which identified multiple transitions and crossovers are associated with the coexistence of 2D and 3D magnetic orders or reorientation of the ordered spins [3,13,19].…”

Section: Resultssupporting

confidence: 89%

“…Another typical honeycomb compound is Na 2 Co 2 TeO 6. A key feature of Na 2 Co 2 TeO 6 is that it has complex couplings and thus presents quite rich magnetic and electric properties [9][10][11]. Na 2 Co 2 TeO 6 has layered structure, where in each layer the CoO 6 octahedrons form a hexagon and TeO 6 octahedrons locate in the center of hexagon.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic properties and phase diagram of quasi-two-dimensional Na₂Co₂TeO₆ single crystal under high magnetic field

Xiao¹,

Xia²,

Song³

et al. 2021

J. Phys.: Condens. Matter

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We investigated the magnetic characteristics of Na2Co2TeO6 at different temperatures and magnetic field. The experimental results indicated that the magnetic field can disturb the antiferromagnetic interaction and lead to the disorder. Magnetization curves measured with different angles θ (θ is between the magnetic field direction and c axis) express the magnetocrystalline anisotropy in this system. When the angle θ = 0 (magnetic field parallel to c axis), two continuous magnetic phase transitions at critical temperature T N1 and T N3 were observed. As θ changes, T N1 is almost independent on θ, indicating the magnetic ordering at T N1 was a spontaneous behavior with a robust AFM characteristic. On the other hand, as θ increases from 0 to 180, T N3 presents extreme value at θ = 90 (magnetic field perpendicular to c axis). It indicates that T N3 were sensitive to temperature and magnetic fields. At some angles closing to ab plane, an additional phase transition was observed at T N2. This phase transition at T N2 may mainly result from the long range antiferromagnetic ordering within ab-plane. Furthermore, the magnetization measurement up to 50 T revealed the strong antiferromagnetic coupling in the system, and in which the magnetic coupling within the honeycomb layers is strong and the magnetic coupling interaction between honeycomb layers is weaker. Based on the experimental results, we have obtained the complete magnetic phase diagram.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Magnetic properties and phase diagram of quasi-two-dimensional Na₂Co₂TeO₆ single crystal under high magnetic field

Xiao¹,

Xia²,

Song³

et al. 2021

J. Phys.: Condens. Matter

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“…More importantly, it is expected to have an antiferromagnetic Kitaev interaction based on the inelastic neutron scattering experiments and subsequent analysis [27]. NCTO has a zigzag order at T N = 27 K with a propagation vector of Q = (0.5, 0, 0) [20,[26][27][28][29][30][31][32][33]. The identical bond length for the nearest neighbor leads to the ideal honeycomb lattice of Co 2+ (space group P6 3 22), making it more likely to have an isotropic Kitaev interaction [see Fig.…”

mentioning

confidence: 99%

Significant thermal Hall effect in the 3d cobalt Kitaev system Na2Co2TeO6

et al. 2022

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Kitaev physics has recently attracted attention in condensed matter for its anticipated quantum spin liquid (QSL) state. The thermal transport measurement is crucial for probing the features of charge-neutral quasiparticles. In this letter, we report a significant thermal Hall effect in Na 2 Co 2 TeO 6 (NCTO), a Kitaev QSL candidate, when the magnetic field is applied along the out-of-plane direction of the honeycomb plane. The thermal conductivity (κ xx ) and thermal Hall conductivity (κ xy ) in NCTO reveal distinct magnetic field dependences below and above the Neel temperature (T N ) of 27 K. For T > T N , κ xx has a monotonic decrease in the field dependence, while κ xy persists up to T * = 150 K. On the other hand, both κ xx and κ xy exhibit complex field dependence for T < T N .

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“…Approximating the interactions with their bond-averaged values [30] is an assumption commonly taken but rarely checked. Two cobaltates, Na 2 Co 2 TeO 6 [16] and BaCo 2 (AsO 4 ) 2 [20], have the C 3 symmetry, but their zero-field ground states are reported to be dissimilar to the monoclinic systems [20,47,48], and no consensus has been reached concerning the microscopic models [49][50][51][52][53][54]. The lack of C 3 symmetry should result in magnetic in-plane anisotropy, as has been observed in α-RuCl 3 [55].…”

mentioning

confidence: 99%

“…The wave-vector switch supports the idea that AFM 1 3 is a ferrimagnetic phase with an enlarged 2D cell compared to AFM 1 2 , such as "↑↑↓" compared to "↑↓". With the understanding that AFM 1 2 features zigzag order [39], AFM 1 3 could feature alternating wide and narrow FMlike chains, but recent indications of triple-q order [47,48] in the sister compound Na 2 Co 2 TeO 6 motivate us to con-sider a multi-q possibility here as well. In this regard, the aforementioned two B c,1 transitions of S 60 are intriguing.…”

mentioning

confidence: 99%

Giant magnetic in-plane anisotropy and competing instabilities in Na3Co2SbO6

Li¹,

Gu²,

Chen³

et al. 2022

Preprint

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We report magnetometry data obtained on twin-free single crystals of Na 3 Co 2 SbO 6 , which is considered a candidate material for realizing the Kitaev honeycomb model for quantum spin liquids. Contrary to a common belief that such materials can be modeled with the symmetries of an ideal honeycomb lattice, our data reveal a pronounced two-fold symmetry and in-plane anisotropy of over 200%, despite the honeycomb layer's tiny orthorhombic distortion of less than 0.2%. We further use magnetic neutron diffraction to elucidate a rich variety of field-induced phases observed in the magnetometry. These phases manifest themselves in the paramagnetic state as diffuse scattering signals associated with competing ferro-and antiferromagnetic instabilities, consistent with a theory that also predicts a quantum spin liquid phase nearby. Our results call for theoretical understanding of the observed in-plane anisotropy, and render Na 3 Co 2 SbO 6 a promising ground for finding exotic quantum phases by targeted external tuning.

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Multistage development of anisotropic magnetic correlations in the Co-based honeycomb lattice Na2Co2TeO6

Cited by 28 publications

References 33 publications

Magnetic properties and phase diagram of quasi-two-dimensional Na₂Co₂TeO₆ single crystal under high magnetic field

Magnetic properties and phase diagram of quasi-two-dimensional Na₂Co₂TeO₆ single crystal under high magnetic field

Significant thermal Hall effect in the 3d cobalt Kitaev system Na2Co2TeO6

Giant magnetic in-plane anisotropy and competing instabilities in Na3Co2SbO6

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Multistage development of anisotropic magnetic correlations in the Co-based honeycomb lattice Na2Co2TeO6

Cited by 28 publications

References 33 publications

Magnetic properties and phase diagram of quasi-two-dimensional Na2Co2TeO6 single crystal under high magnetic field

Magnetic properties and phase diagram of quasi-two-dimensional Na2Co2TeO6 single crystal under high magnetic field

Significant thermal Hall effect in the 3d cobalt Kitaev system Na2Co2TeO6

Giant magnetic in-plane anisotropy and competing instabilities in Na3Co2SbO6

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Product

Resources

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Magnetic properties and phase diagram of quasi-two-dimensional Na₂Co₂TeO₆ single crystal under high magnetic field

Magnetic properties and phase diagram of quasi-two-dimensional Na₂Co₂TeO₆ single crystal under high magnetic field