TY - JOUR
T1 - Hybridization gap in Kondo insulators CeRhSb and CeRhAs studied by ultrahigh-resolution photoemission spectroscopy
AU - Kumigashira, H.
AU - Takahashi, T.
AU - Yoshii, S.
AU - Kasaya, M.
N1 - Funding Information:
HK thanks 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 - Ultrahigh-resolution photoemission spectroscopy (ΔE∼8 meV) has been performed on Kondo insulators CeRhAs and CeRhSb. We found that the 4f-derived density of states shows a depletion (pseudogap) at EF in contrast to metallic Kondo materials. It was also found that the size of both 4f-derived and conduction-electron derived pseudogaps scales well with the Kondo temperature.
AB - Ultrahigh-resolution photoemission spectroscopy (ΔE∼8 meV) has been performed on Kondo insulators CeRhAs and CeRhSb. We found that the 4f-derived density of states shows a depletion (pseudogap) at EF in contrast to metallic Kondo materials. It was also found that the size of both 4f-derived and conduction-electron derived pseudogaps scales well with the Kondo temperature.
KW - CeRhAs
KW - CeRhSb
KW - Kondo insulator
KW - Photoemission
UR - http://www.scopus.com/inward/record.url?scp=0036504185&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036504185&partnerID=8YFLogxK
U2 - 10.1016/S0921-4526(01)01084-5
DO - 10.1016/S0921-4526(01)01084-5
M3 - Conference article
AN - SCOPUS:0036504185
SN - 0921-4526
VL - 312-313
SP - 208
EP - 209
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
T2 - International Conference on Strongly Correlated Electrons
Y2 - 6 August 2002 through 6 August 2002
ER -