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Neutron scattering study of crystal fields in (formula presented)
Christianson, AD Lawrence, JM Pagliuso, PG Moreno, NO Sarrao, JL Thompson, JD Riseborough, PS Kern, S Goremychkin, EA Lacerda, AH
Christianson, AD
Lawrence, JM
Pagliuso, PG
Moreno, NO
Sarrao, JL
Thompson, JD
Riseborough, PS
Kern, S
Goremychkin, EA
Lacerda, AH
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Journal Article
Date
2002-01-01
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10.1103/PhysRevB.66.193102
Abstract
Neutron scattering results for the tetragonal compound (formula presented) give evidence for two crystal field (CF) excitations at 6.9 and 23.6 meV. The scattering can be fit assuming a set of CF parameters (formula presented) (formula presented) and (formula presented) To compare our results with previous work, we calculate the susceptibility and specific heat for this CF scheme, including a molecular field term (formula presented) to account for the Kondo effect. We also include a calculation based on these CF parameters, which uses the noncrossing approximation to the Anderson model to estimate the effect of Kondo physics on the susceptibility, specific heat, and neutron linewidths. © 2002 The American Physical Society.
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Physical Review B - Condensed Matter and Materials Physics
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