1998/12/21 by C. Groeber, C. Gröber, R. Eder · 5 citations
Chemistry · Physics and Astronomy · #Chemistry #Materials science #Metal #Metallurgy #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Rare-earth and actinide compounds #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.59.r10405
published in Physical review. B, Condensed matter 59(16), R10405-R10408 (American Physical Society) · RevTex-file, 4 PRB pages with 4 eps figures. Hardcopies of figures (or the entire manuscript) can be obtained by e-mail request to: [email protected]
arxiv created 1998/12/21 · openalex publication_date 1999/04/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a quantum Monte Carlo (QMC) study of the one-dimensional periodic Anderson model at noninteger filling, i.e., a one-dimensional version of a heavy fermion metal. For this special system the minus-sign problem turns out to be greatly reduced, so that accurate QMC simulations for temperatures as low as 1% of the conduction-electron bandwidth are feasible. The single-particle Green's function shows an intricate network of low-energy bands at low temperature, with a Fermi-surface volume that comprises both c and f electrons. As the temperature increases the system evolves through two distinct crossover temperatures into a very simple band structure with one free c-electron band and a disconnected upper and lower Hubbard band for f electrons. The f electrons thus drop out of the Fermi surface volume as the temperature increases.