Exact insulating and conducting ground states of a periodic Anderson model in three dimensions.
作者： Zsolt Gulácsi , Dieter Vollhardt
DOI: 10.1103/PHYSREVLETT.91.186401
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摘要: We present a class of exact ground states three-dimensional periodic Anderson model at 3/4 filling. Hopping and hybridization d f electrons extend over the unit cell general Bravais lattice. Employing novel composite operators combined with 55 matching conditions Hamiltonian is cast into positive semidefinite form. A product wave function in position space allows one to identify stability regions an insulating conducting state. The metallic phase non-Fermi liquid dispersing flat band.
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