Emergent order in the kagome Ising magnet Dy3Mg2Sb3O14

Joseph A.M. Paddison; Harapan S. Ong; James O. Hamp; Paromita Mukherjee; Xiaojian Bai; Matthew G. Tucker; Nicholas P. Butch; Claudio Castelnovo; Martin Mourigal; S. E. Dutton

doi:10.1038/ncomms13842

Emergent order in the kagome Ising magnet Dy₃Mg₂Sb₃O₁₄

Joseph A.M. Paddison, Harapan S. Ong, James O. Hamp, Paromita Mukherjee, Xiaojian Bai, Matthew G. Tucker, Nicholas P. Butch, Claudio Castelnovo, Martin Mourigal, S. E. Dutton

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

The Ising model - in which degrees of freedom (spins) are binary valued (up/down) - is a cornerstone of statistical physics that shows rich behaviour when spins occupy a highly frustrated lattice such as kagome. Here we show that the layered Ising magnet Dy₃Mg₂Sb₃O₁₄ hosts an emergent order predicted theoretically for individual kagome layers of in-plane Ising spins. Neutron-scattering and bulk thermomagnetic measurements reveal a phase transition at ∼0.3 K from a disordered spin-ice-like regime to an emergent charge ordered state, in which emergent magnetic charge degrees of freedom exhibit three-dimensional order while spins remain partially disordered. Monte Carlo simulations show that an interplay of inter-layer interactions, spin canting and chemical disorder stabilizes this state. Our results establish Dy₃Mg₂Sb₃O₁₄ as a tuneable system to study interacting emergent charges arising from kagome Ising frustration.

Original language	English
Article number	13842
Journal	Nature Communications
Volume	7
DOIs	https://doi.org/10.1038/ncomms13842
State	Published - Dec 20 2016
Externally published	Yes

Funding

The work of J.A.M.P., X.B. and M.M. and facilities at Georgia Tech were supported by the College of Sciences through M.M. start-up funds. J.A.M.P. gratefully acknowledges Churchill College, Cambridge for the provision of a Junior Research Fellowship. H.S.O. acknowledges a Teaching Scholarship (Overseas) from the Ministry of Education, Singapore. J.O.H. is grateful to the Engineering and Physical Sciences Research Council (EPSRC) for funding. C.C. was supported by EPSRC Grant No. EP/G049394/1, and the EPSRC NetworkPlus on 'Emergence and Physics far from Equilibrium'.

Funders	Funder number
Churchill College, Cambridge
Engineering and Physical Sciences Research Council	EP/G049394/1, EP/K028960/1, EP/M000524/1
Ministry of Education - Singapore

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title = "Emergent order in the kagome Ising magnet Dy3Mg2Sb3O14",

abstract = "The Ising model - in which degrees of freedom (spins) are binary valued (up/down) - is a cornerstone of statistical physics that shows rich behaviour when spins occupy a highly frustrated lattice such as kagome. Here we show that the layered Ising magnet Dy3Mg2Sb3O14 hosts an emergent order predicted theoretically for individual kagome layers of in-plane Ising spins. Neutron-scattering and bulk thermomagnetic measurements reveal a phase transition at ∼0.3 K from a disordered spin-ice-like regime to an emergent charge ordered state, in which emergent magnetic charge degrees of freedom exhibit three-dimensional order while spins remain partially disordered. Monte Carlo simulations show that an interplay of inter-layer interactions, spin canting and chemical disorder stabilizes this state. Our results establish Dy3Mg2Sb3O14 as a tuneable system to study interacting emergent charges arising from kagome Ising frustration.",

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AU - Paddison, Joseph A.M.

AU - Ong, Harapan S.

AU - Hamp, James O.

AU - Mukherjee, Paromita

AU - Bai, Xiaojian

AU - Tucker, Matthew G.

AU - Butch, Nicholas P.

AU - Castelnovo, Claudio

AU - Mourigal, Martin

AU - Dutton, S. E.

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Y1 - 2016/12/20

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AB - The Ising model - in which degrees of freedom (spins) are binary valued (up/down) - is a cornerstone of statistical physics that shows rich behaviour when spins occupy a highly frustrated lattice such as kagome. Here we show that the layered Ising magnet Dy3Mg2Sb3O14 hosts an emergent order predicted theoretically for individual kagome layers of in-plane Ising spins. Neutron-scattering and bulk thermomagnetic measurements reveal a phase transition at ∼0.3 K from a disordered spin-ice-like regime to an emergent charge ordered state, in which emergent magnetic charge degrees of freedom exhibit three-dimensional order while spins remain partially disordered. Monte Carlo simulations show that an interplay of inter-layer interactions, spin canting and chemical disorder stabilizes this state. Our results establish Dy3Mg2Sb3O14 as a tuneable system to study interacting emergent charges arising from kagome Ising frustration.

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Emergent order in the kagome Ising magnet Dy₃Mg₂Sb₃O₁₄

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