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ID 15085
file
creator
Higashiguchi, Mitsuharu
Fujimori, S.-I.
Saitoh, Y.
Fujimori, A.
Sasakawa, T.
subject
Ce1-xLaxRhAs
resonance photoemission
Kondo semiconductor
NDC
Physics
abstract
High-resolution resonance-photoemission spectroscopy has been performed on the Ce1-xLaxRhAs (0≤x≤0.05) single crystal to elucidate a collapse of the energy gap in the Kondo semiconductor CeRhAs by La substitution. With increasing x, the spectral intensity of the Ce4f1 derived states near the Fermi level decreases and new 4f derived spectral feature appears at a higher binding energy. The Rh4d-derived states, on the other hand, are not significantly changed by the substitution. New 4f-derived states have incoherent nature, which is responsible for the collapse of the semiconducting state for x>∼0.02.
journal title
Physica B: Condensed Matter
volume
Volume 383
issue
Issue 1
start page
140
end page
141
date of issued
2006-08
publisher
Elsevier B.V.
issn
0921-4526
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2006 Elsevier B.V.
relation is version of URL
http://dx.doi.org/10.1016/j.physb.2006.03.081
department
Hiroshima Synchrotron Radiation Center