25 citations · 30 across the 3 of their papers we have counts for
7 papers
Charge ordering in the spinels AlVO and LiVO
Y. Z. Zhang, P. Fulde, P. Thalmeier +1
We develop a microscopic theory for the charge ordering (CO) transitions in the spinels AlVO and LiVO (under pressure). The high degeneracy of CO states is lifted b…
Ab initio Green's function formalism for band structures
Christian Buth, Uwe Birkenheuer, Martin Albrecht +1
Using the Green's function formalism, an ab initio theory for band structures of crystals is derived starting from the Hartree-Fock approximation. It is based on the algebraic diag…
On a dual model for 5f electrons
D. V. Efremov, N. Hasselmann, E. Runge +2
We study the effect of intra-atomic correlations on anisotropies of hopping of 5f electrons. It is shown that they may considerably enhance these anisotropies to the extend that el…
Origin of heavy quasiparticles in UPt_3
G. Zwicknagl, A. N. Yaresko, P. Fulde
We propose a microscopic description of heavy fermions in UPt_3. It is based on the assumption that two of the three 5f electrons of the U ions are localized. Band-structure calcul…
Effective classical Hamiltonians for spin systems: A closed form with quantum spin-wave effects
D. A. Garanin, D. V. Dmitriev, P. Fulde
Thermodynamic properties of any quantum spin system can be described by the formally exact, although in general intractable, effective classical Hamilton function \cal H. Here we o…
Geometrical Properties of Cumulant Expansions
K. Kladko, P. Fulde
Cumulants represent a natural language for expressing macroscopic properties of a solid. We show that cumulants are subject to a nontrivial geometry. This geometry provides an intu…