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ID 19295
file
creator
So, J.-Y.
Oh, Seung June
Park, Junghwan Gahb
Adroja, D. T.
McEwen, Keith A.
abstract
The formation of pseudogaps in CeNiSn and CeRhSb has been a puzzle for more than a decade. In order to uncover the mystery, we have undertaken inelastic neutron scattering studies of CeNi0.85Cu0.15Sn and CeRh1-xPdxSb with x=0.1 and 0.2. From this study, we have succeeded in finding two observable crystal field excitations experimentally. Our subsequent analysis using a crystalline electric field (CEF) Hamiltonian reveals that the experimental observation can be explained by two separate solutions of the CEF Hamiltonian with different ground state wave functions. Interestingly enough, these two solutions are the same ones favored by two independent theoretical models. We have made further analysis and calculations using a superposition model in order to distinguish between these two solutions and, furthermore, discuss our findings with respect to the currently available theories. Our new results shed light on the nature of the gap formation of CeNiSn and CeRhSb.
journal title
Physical Review B - Condensed Matter and Materials Physics
volume
Volume 71
issue
Issue 21
start page
214441-1
end page
214441-7
date of issued
2005-06-30
publisher
American Physical Society
issn
1098-0121
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2005 The American Physical Society.
relation url
department
Graduate School of Advanced Sciences of Matter