Ordering of localized electronic states in multiferroic TbMnO3: a soft X-ray resonant scattering study

Abstract

Soft X-ray resonant scattering (XRS) has been used to observe directly, for the first time, the ordering of localized electronic states on both the Mn and Tb sites in multiferroic TbMnO${}_3$. Large resonant enhancement of the X-ray scattering cross-section were observed when the incident photon energy was tuned to either the Mn $L$ or Tb $M$ edges which provide information on the Mn 3d and Tb $4f$ electronic states, respectively. The temperature dependence of the XRS signal establishes, in a model independent way, that in the high-temperature phase (28 K $\le$ T $\le$ 42 K) the Mn 3d sublattices displays long-range order. The Tb $4f$ sublattices are found to order only on entering the combined ferroelectric/magnetic state below 28 K. Our results are discussed with respect to recent hard XRS experiments (sensitive to spatially extended orbitals) and neutron scattering.

9 pages, paper has been accepted for publication in Journal of Physics: Condensed Matter as a fast track communication

References in corpus (6)

• Neutron diffraction study of TbMnO3: Magnetic structure revisited
• Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3
• X-ray Resonant Scattering Study of the Order Parameters in Multiferroic TbMnO${}_3$
• Non-resonant and Resonant X-ray Scattering Studies on Multiferroic TbMn2O5
• Resonant x-ray scattering study on multiferroic BiMnO3
• An x-ray resonant diffraction study of multiferroic DyMn2O5

Cited by in corpus (3)

• The Spin-Reorientation Transition in TmFeO3
• Long range antiferromagnetic order of formally non-magnetic Eu${}^{3+}$ Van Vleck ions observed in multiferroic Eu${}_{1-x}$Y${}_x$MnO${}_3$
• Dynamic pathway of the photoinduced phase transition of TbMnO${}_3$