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Photoemission and x-ray absorption of the electronic structure of multiferroic RMnO 3 (R=Y,Er)

Title
Photoemission and x-ray absorption of the electronic structure of multiferroic RMnO 3 (R=Y,Er)
Authors
Kang J.-S.Han S.W.Park J.-G.Wi S.C.Lee S.S.Kim G.Song H.J.Shin H.J.Jo W.Min B.I.
Ewha Authors
조윌렴
SCOPUS Author ID
조윌렴scopus
Issue Date
2005
Journal Title
Physical Review B - Condensed Matter and Materials Physics
ISSN
1098-0121JCR Link
Citation
Physical Review B - Condensed Matter and Materials Physics vol. 71, no. 9
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Electronic structures of multiferroic RMnO 3 (R=Y,Er) have been investigated by employing photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). We have found that Mn ions in RMnO 3 are in the trivalent high-spin state with the total spin of S=2. The occupied Mn (d xz-d yz) states lie deep below E F, while the occupied Mn (d xy-d x2-y2) states overlap very much with the O 2p states. It is observed that the PES spectral intensity of Mn 3d states is negligible above the occupied O 2p bands, suggesting that YMnO 3 is likely to be a charge-transfer insulator. The Mn d 3z2-r2 state is mostly unoccupied in the ferroelectric phase of YMnO 3. ©2005 The American Physical Society.
DOI
10.1103/PhysRevB.71.092405
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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