TY - JOUR
T1 - Pseudogap formation in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy
AU - Kumigashira, H.
AU - Sato, T.
AU - Yokoya, T.
AU - Takahashi, T.
AU - Yoshii, S.
AU - Kasaya, M.
N1 - Funding Information:
The authors are grateful to Prof. O. Sakai for useful discussion. H.K. and T.S. thank the Japan Society for Promotion of Science for financial support. This work was supported by a grant from the Ministry of Education, Science, Sports and Culture of Japan.
PY - 2000/6/1
Y1 - 2000/6/1
N2 - We report an ultrahigh-resolution (ΔE to approximately 8 meV) temperature-dependent photoemission spectroscopy on the Kondo insulators CeRhAs and CeRhSb. We have observed a pseudogap at the Fermi level at low temperature for both compounds, which is gradually filled-in with increasing temperature. We found that the size of pseudogap is well scaled with the Kondo temperature (TK) while the temperature evolution is dominated by another characteristic temperature much lower than TK.
AB - We report an ultrahigh-resolution (ΔE to approximately 8 meV) temperature-dependent photoemission spectroscopy on the Kondo insulators CeRhAs and CeRhSb. We have observed a pseudogap at the Fermi level at low temperature for both compounds, which is gradually filled-in with increasing temperature. We found that the size of pseudogap is well scaled with the Kondo temperature (TK) while the temperature evolution is dominated by another characteristic temperature much lower than TK.
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U2 - 10.1016/S0921-4526(99)00827-3
DO - 10.1016/S0921-4526(99)00827-3
M3 - Conference article
AN - SCOPUS:0033897863
SN - 0921-4526
VL - 281-282
SP - 284
EP - 285
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
T2 - Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99)
Y2 - 24 August 1999 through 28 August 1999
ER -