Quadrupolar Frustration in Shastry-Sutherland Lattice of DyB4 Studied by Resonant X-ray Scattering

Abstract

We have observed geometrical frustration of quadrupolar and magnetic moments in dysprosium tetraboride, DyB4, where the rare-earth sites form a Shastry-Sutherland lattice. Resonant x-ray scattering at the LIII absorption edge of Dy was utilized. Analysis of the energy, polarization, temperature, and azimuthal-angle dependences of the E1 resonance of the (1 0 0) forbidden reflection show that the magnetic and quadrupolar components within the frustrated c plane have a short-range correlation, suggesting that the moments are fluctuating. By contrast, the basic antiferromagnetic component along the c axis has a long-range order.

5 pages, 4 figures, submitted to Physical Review Letter

References in corpus (3)

• Spin and orbital frustration in MnSc_2S_4 and FeSc_2S_4
• Geometrical quadrupolar frustration in DyB${}_4$
• d-f Coulomb and quadrupole-strain interactions in DyB2C2 observed by resonant x-ray scattering

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• Understanding Spin Configuration in the Geometrically Frustrated Magnet TbB${}_4$: a Resonant Soft X-ray Scattering Study
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