TY - JOUR
T1 - Resonant angle-resolved photoemission study of heavy fermion material CeRu2Si2
AU - Kumigashira, H.
AU - Ito, T.
AU - Takahashi, T.
AU - Kaminski, A.
AU - Campuzano, J. C.
AU - Onuki, Y.
N1 - Funding Information:
HK and TI thank the Japan Society for Promotion of Science for financial support. This work was supported by a grant from the Ministry of Education, Science, and Culture of Japan.
PY - 2002/3
Y1 - 2002/3
N2 - Resonant angle-resolved photoemission spectroscopy has been performed on a heavy fermion material CeRu2Si2 at the 4d-4f core threshold. The angle-resolved photoemission spectra display a sharp peak at EF which shows a remarkable intensity variation as a function of momentum, suggesting an energy dispersion of the Kondo resonance state above EF. On increasing temperature, the peak intensity is rapidly suppressed, while it persists up to a temperature much higher than the Kondo temperature.
AB - Resonant angle-resolved photoemission spectroscopy has been performed on a heavy fermion material CeRu2Si2 at the 4d-4f core threshold. The angle-resolved photoemission spectra display a sharp peak at EF which shows a remarkable intensity variation as a function of momentum, suggesting an energy dispersion of the Kondo resonance state above EF. On increasing temperature, the peak intensity is rapidly suppressed, while it persists up to a temperature much higher than the Kondo temperature.
KW - CeRuSi
KW - Heavy fermion
KW - Photoemission
UR - http://www.scopus.com/inward/record.url?scp=0036504206&partnerID=8YFLogxK
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U2 - 10.1016/S0921-4526(01)01216-9
DO - 10.1016/S0921-4526(01)01216-9
M3 - Conference article
AN - SCOPUS:0036504206
VL - 312-313
SP - 658
EP - 659
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
T2 - International Conference on Strongly Correlated Electrons
Y2 - 6 August 2002 through 6 August 2002
ER -