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Serrano-González, Heliodoro; Bramwell, S. T.; Harris, Kenneth D. M.; Kariuki, Benson M.; Nixon, Lane W.; Parkin, IP; Ritter, C.

doi:10.1103/physrevb.59.14451

Cited by 30 publications

(28 citation statements)

References 25 publications

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“…• structure has been found in CsFe(SO 4 8 Unfortunately, these compounds only exist in polycrystalline form or as small single-crystals limiting the possibilities of experimental investigation. Additional terms in the spin Hamiltonian can favour different magnetic structures or even destroy long range order.…”

Section: Among Real Triangular Lattice Materials the 120mentioning

confidence: 99%

120∘helical magnetic order in the distorted triangular antiferromagnetα-CaCr2O
Tóth
¹
,
Lake
²
,
Kimber
³

et al. 2011
Phys. Rev. B
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α-CaCr2O4 is a distorted triangular antiferromagnet. The magnetic Cr 3+ ions which have spin-3/2 and interact with their nearest neighbors via Heisenberg direct exchange interactions, develop long-range magnetic order below TN = 42.6 K. Powder and single-crystal neutron diffraction reveal a helical magnetic structure with ordering wavevector k = (0, ∼ 1/3, 0) and angles close to 120• between neighboring spins. Spherical neutron polarimetry unambiguously proves that the spins lie in the ac plane perpendicular to k. The magnetic structure is therefore that expected for an ideal triangular antiferromagnet where all nearest neighbor interactions are equal, in spite of the fact that α-CaCr2O4 is distorted with two inequivalent Cr 3+ ions and four different nearest neighbor interactions. By simulating the magnetic order as a function of these four interactions it is found that the special pattern of interactions in α-CaCr2O4 stabilizes 120• helical order for a large range of exchange interactions.

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Section: Among Real Triangular Lattice Materials the 120mentioning

confidence: 99%

120∘helical magnetic order in the distorted triangular antiferromagnetα-CaCr2O
Tóth
¹
,
Lake
²
,
Kimber
³

et al. 2011
Phys. Rev. B
Self Cite
30
5
51
0
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“…The Ti material on the other hand does not order above 1.2 K and shows f > 10, which should provide motivation for further studies. [28,29] An additional set of distorted TP magnets is provided by another form of site-ordered NaCl oxide, namely, A 5 MO 6 . Two examples which have been studied in some detail are Li 4 MgReO 6 and Li 5 OsO 6 .…”

Section: Distorted Triangular Planesmentioning

confidence: 99%

Geometrically Frustrated Magnetic Materials

Greedan¹

2010

Functional Oxides

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“…8 A good experimental realization of the frustrated antiferromagnetic XY model on a stacked triangular lattice is ABX 3 -type halides ͑like CsNiCl 3 , CsMnBr 3 , and CsCuCl 3 ). 12,13 The magnetic B 2ϩ ions form a triangular antiferromagnet within the ab planes and a ferromagnetic coupling along the c direction produces three-dimensional order.…”

Section: Introductionmentioning

confidence: 99%

Spin-dynamics simulations of the triangular antiferromagneticXYmodel

Nho

Landau

2002

Phys. Rev. B

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Using Monte Carlo and spin-dynamics methods, we have investigated the dynamic behavior of the classical, antiferromagnetic XY model on a triangular lattice with linear sizes Lр300. The temporal evolutions of spin configurations were obtained by solving numerically the coupled equations of motion for each spin using fourth-order Suzuki-Trotter decompositions of exponential operators. From space-and time-displaced spinspin correlation functions and their space-time Fourier transforms we obtained the dynamic structure factor S(q,w) for momentum q and frequency . Below T KT ͑Kosterlitz-Thouless transition͒, both the in-plane (S xx ) and out-of-plane (S zz ) components of S(q,) exhibit very strong and sharp spin-wave peaks. Well above T KT , S xx and S zz apparently display a central peak, and spin-wave signatures are still seen in S zz . In addition, we also observed an almost dispersionless domain-wall peak at high below T c ͑Ising transition͒, where longrange order appears in the staggered chirality. Above T c , the domain-wall peak disappears for all q. The line shape of these peaks is captured reasonably well by a Lorentzian form. Using a dynamic finite-size scaling theory, we determined the dynamic critical exponent zϭ1.002(3). We found that our results demonstrate the consistency of the dynamic finite-size scaling theory for the characteristic frequency m and the dynamic structure factor S(q,) itself.

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Structural and magnetic characterization of the frustrated triangular-lattice antiferromagnetsCsFe(SO4

Cited by 30 publications

References 25 publications

120∘helical magnetic order in the distorted triangular antiferromagnetα-CaCr2O
Tóth
¹
,
Lake
²
,
Kimber
³

et al. 2011
Phys. Rev. B
Self Cite
30
5
51
0
View full text Add to dashboard Cite

120∘helical magnetic order in the distorted triangular antiferromagnetα-CaCr2O
Tóth
¹
,
Lake
²
,
Kimber
³

et al. 2011
Phys. Rev. B
Self Cite
30
5
51
0
View full text Add to dashboard Cite

Geometrically Frustrated Magnetic Materials

Spin-dynamics simulations of the triangular antiferromagneticXYmodel

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Structural and magnetic characterization of the frustrated triangular-lattice antiferromagnetsCsFe(SO4

Cited by 30 publications

References 25 publications

120∘helical magnetic order in the distorted triangular antiferromagnetα-CaCr2OTóth1, Lake2, Kimber3 et al. 2011Phys. Rev. BSelf Cite305510View full textAdd to dashboardCite

120∘helical magnetic order in the distorted triangular antiferromagnetα-CaCr2OTóth1, Lake2, Kimber3 et al. 2011Phys. Rev. BSelf Cite305510View full textAdd to dashboardCite

Geometrically Frustrated Magnetic Materials

Spin-dynamics simulations of the triangular antiferromagneticXYmodel

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Product

Resources

About

120∘helical magnetic order in the distorted triangular antiferromagnetα-CaCr2O
Tóth
¹
,
Lake
²
,
Kimber
³

et al. 2011
Phys. Rev. B
Self Cite
30
5
51
0
View full text Add to dashboard Cite

120∘helical magnetic order in the distorted triangular antiferromagnetα-CaCr2O
Tóth
¹
,
Lake
²
,
Kimber
³

et al. 2011
Phys. Rev. B
Self Cite
30
5
51
0
View full text Add to dashboard Cite