Braided Ising spin-tube physics in a purported kagome magnet

Abstract

The magnetic insulator Nd${}_3$BWO${}_9$ has been previously proposed to realize the highly frustrated breathing kagome lattice model. We report a combination of single-crystal neutron scattering studies and numerical simulations that debunk this interpretation. We show that it is the inter-plane couplings that determine the physics. To explain the exotic magnetism, we derive a simple one-dimensional Ising model composed of twisted triangular spin-tubes, i.e., triple braids of Ising spin chains with almost-orthogonal anisotropy frames and competing ferro-antiferromagnetic interactions. This model can account for the ground state, excitations, the numerous field-induced fractional magnetization plateau phases and incommensurate magnetic correlations at elevated temperatures. Nd${}_3$BWO${}_9$ constitutes a rare example where rich magnetic phenomena can be understood and simulated quantitatively in terms of a simple classical Hamiltonian.

6 pages, 4 figures (SM 13 pages, 12 figures)

References in corpus (14)

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• A series of magnon crystals appearing under ultrahigh magnetic fields in a kagomé antiferromagnet
• Exchange interaction between $J$-multiplets
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• Incommensurate magnetic order in Sm${}_3$BWO${}_9$ with the distorted kagome lattice
• Local evidence for collective spin excitations in the distorted kagome antiferromagnet Pr${}_3$BWO${}_9$
• New applications for the world's smallest high-precision capacitance dilatometer and its stress-implementing counterpart
• Possible stripe phases in the multiple magnetization plateaus in TbB${}_4$ derived from single-crystal neutron diffraction under pulsed high magnetic fields
• Magnetic properties and field-induced phenomena in the Jeff = 1/2 distorted kagome antiferromagnet

Cited by in corpus (3)

• Antiferromagnetic ordering and critical behavior induced giant magnetocaloric effect in distorted kagome lattice Gd${}_3$BWO${}_9$
• Ising Supercriticality and Universal Magnetocalorics in Spiral Antiferromagnet Nd${}_3$BWO${}_9$
• Ising spin ladders of orthopyroxene CoGeO${}_3$