Spiral Spin Liquid on a Honeycomb Lattice

Gao, Shang; McGuire, Michael A.; Liu, Yaohua; Abernathy, D. L.; Frontzek, Matthias; Stone, M. B.; Christianson, A. D.

doi:10.1103/physrevlett.128.227201

Cited by 24 publications

(8 citation statements)

References 76 publications

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“…Following the recent report of a SSL ground state and order by disorder in FeCl 3 [11], we grew the mixed-halide crystals of FeCl 3−x Br x with the goal of tuning the SSL ground state. Since both FeCl 3 and FeBr 3 crystallize in the rhombohedral space group R 3m with a layered honeycomb structure, a solid solution of FeCl 3−x Br x crystals can also be grown with the same structure [Figs.…”

Section: Resultsmentioning

confidence: 99%

“…Recent neutron scattering experiments on the VdW magnet FeCl 3 with a honeycomb lattice have shown a ring of degenerate k vectors just above T N = 8.5 K, indicating a 2D SSL phase [11]. Below T N , a spiral order with k = ( 4 15 , 1 15 , 3 2 ) is established [12,13] indicating the entropic selection of this propagation vector by spin fluctuations, i.e., order by disorder.…”

Section: Introductionmentioning

confidence: 99%

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Extreme sensitivity of the magnetic ground state to halide composition in FeCl3−xBrx

Cole

Streeter

Fumega

et al. 2023

Phys. Rev. Materials

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Mixed halide chemistry has recently been utilized to tune the intrinsic magnetic properties of transition-metal halides-one of the largest families of magnetic van der Waals materials. Prior studies have shown that the strength of exchange interactions, hence the critical temperature, can be tuned smoothly with halide composition for a given ground state. Here we show that the ground state itself can be altered by a small change of halide composition in FeCl 3−x Br x . Specifically, we find a threefold jump in the Néel temperature and a sign change in the Weiss temperature at x = 0.08 corresponding to only 3% bromine doping. Using neutron scattering, we reveal a change of the ground state from spiral order in FeCl 3 to A-type antiferromagnetic order in FeBr 3 . From first-principles calculations, we show that a delicate balance between nearest and next-nearest neighbor interactions is responsible for such a transition. These results demonstrate how varying the halide composition can tune the competing interactions and change the ground state of a spiral spin liquid system.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Extreme sensitivity of the magnetic ground state to halide composition in FeCl3−xBrx

Cole

Streeter

Fumega

et al. 2023

Phys. Rev. Materials

View full text Add to dashboard Cite

show abstract

“…Recent neutron scattering experiments on the VdW magnet FeCl 3 with a honeycomb lattice have shown a ring of degenerate k-vectors just above T N = 8.5 K, indicating a 2D SSL phase 11 . Below T N , a spiral order with k = ( 415 , 1 15 , 3 2 ) is established 12,13 indicating the entropic selection of this propagation vector by spin fluctuations, i.e.…”

Section: Introductionmentioning

confidence: 99%

Extreme sensitivity of the magnetic ground-state to halide composition in FeCl$_{3-x}$Br$_x$

Cole¹,

Streeter²,

Fumega³

et al. 2023

Preprint

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Mixed halide chemistry has recently been utilized to tune the intrinsic magnetic properties of transition-metal halides -one of the largest families of magnetic van der Waals materials. Prior studies have shown that the strength of exchange interactions, hence the critical temperature, can be tuned smoothly with halide composition for a given ground-state. Here we show that the groundstate itself can be altered by a small change of halide composition leading to a quantum phase transition in FeCl3−xBrx. Specifically, we find a three-fold jump in the Néel temperature and a sign change in the Weiss temperature at x = 0.08 corresponding to only 3% bromine doping. Using neutron scattering, we reveal a change of the ground-state from spiral order in FeCl3 to Atype antiferromagnetic order in FeBr3. Using first-principles calculations, we show that a delicate balance between nearest and next-nearest neighbor interactions is responsible for such a transition. These results support the proximity of FeCl3 to a spiral spin liquid state, in which competing interactions and nearly degenerate magnetic k-vectors may cause large changes in response to small perturbations.

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“…Honeycomb magnets, due to their high symmetry and twodimensionality, can host a wide range of magnetic phases, including monolayer ferromagnetism in CrI 3 , 1 proximate Kitaev spin liquid states in RuCl 3 and Na 2 Co 2 TeO 6 , 2,3 complex spin textures in FeCl 3 , 4 and magnetoelectricity in Co 2 Mo 3 O 8 . 5 Molecular magnets are of particular interest for low-dimensional magnetism as it is often more straightforward to produce well-isolated low-dimensional connectivity, and the molecular ligands offer the potential for a high degree of tunability.…”

mentioning

confidence: 99%

“…Honeycomb magnets, due to their high symmetry and two-dimensionality, can host a wide range of magnetic phases, including monolayer ferromagnetism in CrI 3 , 1 proximate Kitaev spin liquid states in RuCl 3 and Na 2 Co 2 TeO 6 , 2,3 complex spin textures in FeCl 3 , 4 and magnetoelectricity in Co 2 Mo 3 O 8 . 5…”

mentioning

confidence: 99%

Magnetic structure and properties of the honeycomb antiferromagnet [Na(OH₂)₃]Mn(NCS)₃

Geers,

Gill,

Burnett

et al. 2024

Phys. Chem. Chem. Phys.

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Spiral Spin Liquid on a Honeycomb Lattice

Cited by 24 publications

References 76 publications

Extreme sensitivity of the magnetic ground state to halide composition in FeCl3−xBrx

Extreme sensitivity of the magnetic ground state to halide composition in FeCl3−xBrx

Extreme sensitivity of the magnetic ground-state to halide composition in FeCl$_{3-x}$Br$_x$

Magnetic structure and properties of the honeycomb antiferromagnet [Na(OH₂)₃]Mn(NCS)₃

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Spiral Spin Liquid on a Honeycomb Lattice

Cited by 24 publications

References 76 publications

Extreme sensitivity of the magnetic ground state to halide composition in FeCl3−xBrx

Extreme sensitivity of the magnetic ground state to halide composition in FeCl3−xBrx

Extreme sensitivity of the magnetic ground-state to halide composition in FeCl$_{3-x}$Br$_x$

Magnetic structure and properties of the honeycomb antiferromagnet [Na(OH2)3]Mn(NCS)3

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Magnetic structure and properties of the honeycomb antiferromagnet [Na(OH₂)₃]Mn(NCS)₃