Multiple-structure optical spectral weight transfer in ferromagnetic EuB6

Jungho Kim, Sunghoon Jung, E. J. Choi

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We have obtained the optical conductivity of EuBe over a wide range from 2 meV to 5.5 eV from reflectivity and ellipsometry measurements. At the ferromagnetic transition (Tc = 15.5 K) (1) σ1 (w) was found to decrease at three different energies w = 0.5, 1.4 and 2.75 eV and (2) the lost spectral weight was found to be recovered in the Drude conductivity. We show that these unusual multiple-structure optical conductivity changes can be explained by using the spin-dependent splitting of the electronic bands at the ferromagnetic phase.

Original languageEnglish
Pages (from-to)3385-3389
Number of pages5
JournalJournal of the Korean Physical Society
Issue number6
StatePublished - Dec 2008


  • Ferromagnetic transition
  • Infrared conductivity
  • Optical sum rule


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