High-order Dy multipole motifs observed in DyB2C2 with resonant soft x-ray Bragg diffraction
arXiv:cond-mat/0603048 · doi:10.1088/0953-8984/18/49/012
Abstract
Resonant soft x-ray Bragg diffraction at the Dy M4,5 edges has been exploited to study Dy multipole motifs in DyB2C2. Our results are explained introducing the intra-atomic quadrupolar interaction between the core 3d and valence 4f shell. This allows us to determine for the first time higher order multipole moments of dysprosium electrons and to draw their precise charge density. The Dy hexadecapole and hexacontatetrapole moment have been estimated at -20% and +30% of the quadrupolar moment, respectively. No evidence for the lock-in of the orbitals at T_N has been observed, in contrast to earlier suggestions. The multipolar interaction and the structural transition cooperate along c but they compete in the basal plane explaining the canted structure along [110].
arXiv comment4 pages, 3 figures
References in corpus (5)
- Direct Observation of Antiferro-Quadrupolar Ordering - Resonant X-ray Scattering Study of DyB2C2
- Group theory and octupolar order in URu2Si2
- Microscopic theory of multipole ordering in NpO2
- Itinerant magnetism in Kondo crystal CeB6 as indicated by polarized neutron scattering
- d-f Coulomb and quadrupole-strain interactions in DyB2C2 observed by resonant x-ray scattering
Cited by in corpus (10)
- First-principles theory of magnetic multipoles in condensed matter systems
- RASOR: An advanced instrument for soft x-ray reflectivity and diffraction
- Crystal Symmetry Lowering in Chiral Multiferroic BaTaFeSiO observed by X-Ray Magnetic Scattering
- Manipulating 4f quadrupolar pair interactions in TbB2C2 using a magnetic field
- Direct observation of electron density reconstruction at the metal-insulator transition in NaOsO3
- Satellite holmium M-edge spectra from the magnetic phase via resonant x-ray scattering
- Mean-field Study of Antiferromagnetic and Antiferroquadrupolar Orderings in Tetragonal CeCoSi
- Triakontadipole and high-order dysprosium multipoles in the antiferromagnetic phase of DyBC
- High-order Ho multipoles in HoB2C2 observed with soft resonant x-ray diffraction
- Effect of core-valence intra-atomic quadrupolar interaction in resonant x-ray scattering at the Dy M edges in DyBC