Bilayer Hubbard model for 3He: a cluster dynamical mean-field calculation - Condensed Matter > Strongly Correlated ElectronsReportar como inadecuado




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Abstract: Inspired by recent experiments on bilayer 3He, we consider a bilayer Hubbardmodel on a triangular lattice. For appropriate model parameters, we observe aband-selective Mott transition at a critical chemical potential, mu c,corresponding to the solidification of the fermions in the first layer. Thegrowth of the effective mass on the metallic side mu < mu c is cut off by afirst order transition in which the first layer fermions drop out of theLuttinger volume and their spin degrees of freedom become locked in a spinsinglet state. These results are obtained from a cluster dynamical mean-fieldcalculation on an eight-site cluster with a quantum Monte Carlo cluster solver.



Autor: K. S. D. Beach, F. F. Assaad

Fuente: https://arxiv.org/







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