期刊
PHYSICAL REVIEW B
卷 78, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.104407
关键词
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资金
- EPSRC
- Office of Science U. S. Department of Energy [DE-AC02-98CH10886.]
- EPSRC [EP/F001517/1, EP/F000375/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F000375/1, EP/F001517/1] Funding Source: researchfish
We have employed resonant x-ray magnetic scattering to specifically probe the magnetic order of the rare-earth ions in multiferroic TbMn(2)O(5). Two energy resonances were observed, one originated from the E1-E1 dipolar transition and the other from the E2-E2 quadrupolar transition. These resonances directly probe the valence 5d band and the partially occupied 4f band, respectively. First, full polarization analysis, which is a measurement of the scattered polarization as a function of incident polarization, confirmed a spin polarization of the terbium valence states (probed by the E1-E1 transition) by the Mn(4+) spin density in the commensurate phase. Second, full polarization analysis data were collected in the low-temperature incommensurate and commensurate phases when tuned to the E2-E2 resonance. By employing a least-squares fitting procedure, the spin orientations of the terbium ion sublattice were refined.
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