TY - JOUR
T1 - Low-frequency magnetic response in valence fluctuating and heavy fermion systems
AU - Zwicknagl, G.
AU - Zevin, V.
AU - Fulde, P.
PY - 1990/4
Y1 - 1990/4
N2 - By starting from an Anderson impurity Hamiltonian, a simple approximation for the spectral densities of the occupied and the empty f state is suggested. With it such thermodynamic quantities like the partial f occupancies go over, in the zero temperature limit, into the results of variational calculations. The approximation is applied in the presence of a crystalline electric field in order to calculate χ″(w,T). A comparison with previous, more elaborate calculations is provided for the case of vanishing CEF splittings.
AB - By starting from an Anderson impurity Hamiltonian, a simple approximation for the spectral densities of the occupied and the empty f state is suggested. With it such thermodynamic quantities like the partial f occupancies go over, in the zero temperature limit, into the results of variational calculations. The approximation is applied in the presence of a crystalline electric field in order to calculate χ″(w,T). A comparison with previous, more elaborate calculations is provided for the case of vanishing CEF splittings.
UR - http://www.scopus.com/inward/record.url?scp=45149138092&partnerID=8YFLogxK
U2 - 10.1016/0921-4526(90)90274-X
DO - 10.1016/0921-4526(90)90274-X
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AN - SCOPUS:45149138092
SN - 0921-4526
VL - 163
SP - 577
EP - 580
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 1-3
ER -