E!ect of a crystalline electric "eld on photoemission spectra of CeB
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چکیده
We have measured high-resolution Ce 4d}4f resonant photoemission spectra of CeB 6 . In the on-resonance spectra, two peaks appear near the Fermi level (E F ). We have revealed that one corresponds to the 4f1 7@2 "nal state whereas the other one closer to E F is due to a mixture of the tail of the Kondo peak (! 8 "nal state) and its crystalline electric "eld (CEF) partner (! 7 "nal state). We also show that the CEF e!ect is mainly re#ected in the spectra near E F and that the Kondo temperature can be properly estimated from the high-resolution spectra near E F by considering CEF. ( 2000 Elsevier Science B.V. All rights reserved.
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تاریخ انتشار 2000