• DOI:10.1103/PhysRevB.99.184437
• Corpus ID: 119261978

Magnetic structure and spin waves in the frustrated ferro-antiferromagnet Pb2VO(PO4)2.

@article{Bettler2019MagneticSA,
  title={Magnetic structure and spin waves in the frustrated ferro-antiferromagnet Pb2VO(PO4)2.},
  author={S. Bettler and Florian Landolt and {\"O}mer M. Aksoy and Z. Yan and S. Gvasaliya and Yiming Qiu and Eric Ressouche and Ketty Beauvois and St{\'e}phane Raymond and A. N. Ponomaryov and Sergei A. Zvyagin and Andrey Zheludev},
  journal={Physical review. B},
  year={2019},
  volume={99 18}
}

• S. Bettler, F. Landolt, +9 authors A. Zheludev
• Published 28 February 2019
• Physics
• Physical review. B

Single crystal neutron diffraction, inelastic neutron scattering, and electron spin resonance experiments are used to study the magnetic structure and spin waves in Pb2VO(PO4)2, a prototypical layered S = 1/2 ferromagnet with frustrating next-nearest neighbor antiferromagnetic interactions. The observed excitation spectrum is found to be inconsistent with a simple square lattice model previously proposed for this material. At least four distinct exchange coupling constants are required to reproduce the measured spin wave dispersion. The degree of magnetic frustration is correspondingly revised and found to be substantially smaller than in all previous estimates.