TY - JOUR
T1 - High-magnetic-field XMCD as a novel tool for the study of valence fluctuation phenomena-application to eu-based intermetallic compounds
AU - Matsuda, Y. H.
AU - Her, J. L.
AU - Inami, T.
AU - Ohwada, K.
AU - Ouyang, Z. W.
AU - Okada, K.
AU - Nojiri, H.
AU - Mitsuda, Akihiro
AU - Wada, Hirofumi
AU - Kawamura, N.
AU - Suzuki, M.
PY - 2010/4/1
Y1 - 2010/4/1
N2 - X-ray magnetic circular dichroism (XMCD) in Eu-based valence fluctuating compounds, EuNi2(Si1-x Ge x )2 (x=0.82, 0.85) and EuNi2P2 are investigated at high magnetic fields up to 40 T. Distinct two XMCD peaks corresponding to different valence states, i.e., Eu2+ and Eu3+ states are observed in EuNi2(Si1-x Ge x )2 (x=0.82) and EuNi2P2 at the L absorption edges (2p→5d). This suggests that the Eu 5d electrons are magnetically polarized in the both valence states. Since Eu3+ state has nonmagnetic ground state J=0, where J is total angular momentum, finite XMCD of Eu3+ state can be closely related to the magnetic polarization of the conduction electrons that is induced by the local magnetic moments of Eu2+ (J=7/2) state through the strong hybridization.
AB - X-ray magnetic circular dichroism (XMCD) in Eu-based valence fluctuating compounds, EuNi2(Si1-x Ge x )2 (x=0.82, 0.85) and EuNi2P2 are investigated at high magnetic fields up to 40 T. Distinct two XMCD peaks corresponding to different valence states, i.e., Eu2+ and Eu3+ states are observed in EuNi2(Si1-x Ge x )2 (x=0.82) and EuNi2P2 at the L absorption edges (2p→5d). This suggests that the Eu 5d electrons are magnetically polarized in the both valence states. Since Eu3+ state has nonmagnetic ground state J=0, where J is total angular momentum, finite XMCD of Eu3+ state can be closely related to the magnetic polarization of the conduction electrons that is induced by the local magnetic moments of Eu2+ (J=7/2) state through the strong hybridization.
UR - http://www.scopus.com/inward/record.url?scp=77950369785&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950369785&partnerID=8YFLogxK
U2 - 10.1007/s10909-009-0129-z
DO - 10.1007/s10909-009-0129-z
M3 - Article
AN - SCOPUS:77950369785
VL - 159
SP - 292
EP - 296
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 1-2
ER -