Incomplete devil's staircase in the magnetization curve of SrCu2(BO3)2

Abstract

We report on NMR and torque measurements on the frustrated quasi-two-dimensional spin-dimer system SrCu2(BO3)2 in magnetic fields up to 34 T that reveal a sequence of magnetization plateaus at 1/8, 2/15, 1/6, and 1/4 of the saturation and two incommensurate phases below and above the 1/6 plateau. The magnetic structures determined by NMR involve a stripe order of triplets in all plateaus, suggesting that the incommensurate phases originate from proliferation of domain walls. We propose that the magnetization process of SrCu2(BO3)2 is best described as an incomplete devil's staircase.

21 pages, 9 figures (main: 12 pages, 4 figures/supplemental material: 9 pages, 5 figures)

References in corpus (17)

• Bose-Einstein Condensation in Magnetic Insulators
• Spin-lattice coupling in frustrated antiferromagnets
• Magnetic Superstructure in the Two-Dimensional Quantum Antiferromagnet SrCu2(BO3)2
• Magnetization plateaus of the Shastry-Sutherland model for SrCu_2(BO_3)_2: SDW, supersolid and bound states
• Fractalization drives crystalline states in a frustrated spin system
• Theory of magnetization plateaux in the Shastry-Sutherland model
• Incomplete devil's staircase in the magnetization curve of SrCu2(BO3)2
• Effective Theory of Magnetization Plateaux in the Shastry-Sutherland Lattice
• Field dependence of the quantum ground state in the Shastry-Sutherland system SrCu${}_2$(BO${}_3$)${}_2$
• Uniform and staggered magnetizations induced by Dzyaloshinskii-Moriya interactions in isolated and coupled spin 1/2 dimers in a magnetic field
• Theory of spin density profile in the magnetization plateaus of SrCu_2(BO_3)_2
• Universal magnetic structure of the half-magnetization phase in Cr-based spinels
• NMR evidence for the persistence of spin-superlattice above the 1/8 magnetization plateau in SrCu2(BO3)2
• Microscopic mechanism for the 1/8 magnetization plateau in SrCu_2(BO_3)_2
• Devil's staircases, quantum dimer models, and stripe formation in strong coupling models of quantum frustration
• Cu nuclear spin-spin coupling in the dimer singlet state in SrCu2(BO3)2
• Phase diagram of the fully frustrated transverse-field Ising model on the honeycomb lattice

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