161 citations · 233 across the 6 of their papers we have counts for
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cond-mat.stat-mech2003★ 9 cited
Single-ion versus exchange anisotropy in calculating anisotropic susceptibilities of thin ferromagnetic Heisenberg films within many-body Green's function theory
P. Fröbrich, P. J. Kuntz
We compare transverse and parallel static susceptibilities of in-plane uniaxial anisotropic ferromagnetic Heisenberg films calculated in the framework of many-body Green's function…
cond-mat.stat-mech2003★ 15 cited
The spectral theorem of many-body Green's function theory when there are zero eigenvalues of the matrix governing the equations of motion
P. Fröbrich, P. J. Kuntz
In using the spectral theorem of many-body Green's function theory in order to relate correlations to commutator Green's functions, it is necessary in the standard procedure to con…