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Article Dans Une Revue Physical Review Letters Année : 2013

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

Résumé

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.

Dates et versions

hal-00960280 , version 1 (17-03-2014)

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Masashi Takigawa, Mladen Horvatić, Takeshi Waki, Steffen Krämer, Claude Berthier, et al.. Incomplete devil's staircase in the magnetization curve of SrCu2(BO3)2. Physical Review Letters, 2013, 110, pp.067210. ⟨10.1103/PhysRevLett.110.067210⟩. ⟨hal-00960280⟩

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