Phys. Rev. Lett. 71, 129–132 (1993)Formation of a coherent heavy electron state in the Anderson lattice modelReceived 15 October 1992; published in the issue dated 5 July 1993 We present self-consistent calculations for the self-energy, thermodynamic potential, and magnetic susceptibility of the 2D asymmetric Anderson lattice Hamiltonian, in the fluctuation exchange approximation. For parameters that yield a large local moment, a narrow peak at the Fermi energy grows out of an otherwise smooth density of states as the system is cooled. The height of the peak reaches a maximum and then decreases, signaling the onset of coherence. The susceptibility shows a similar temperature dependence. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.71.129
DOI:
10.1103/PhysRevLett.71.129
PACS:
71.28.+d, 71.20.-b, 75.20.Hr
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