Optical signatures of momentum-dependent hybridization of the local moments and conduction electrons in Kondo lattices

K. S. Burch, S. V. Dordevic, F. P. Mena, A. B. Kuzmenko, D. van der Marel, J. L. Sarrao, J. R. Jeffries, E. D. Bauer, M. B. Maple, and D. N. Basov
Phys. Rev. B 75, 054523 – Published 27 February 2007

Abstract

An analysis of the optical properties of heavy fermion compounds is reported. We focus on the 1-1-5 series, where strong deviations of the spectra are seen from the predictions of the periodic Anderson model. Specifically we demonstrate that the differences between the experimental results and the theoretical predictions can be explained by accounting for the momentum dependence of the hybridization between the local moments and the conducting carriers. Furthermore we find correlations between the hybridization strength on a particular band and some properties of the 1-1-5 compounds. These correlations suggest that the momentum dependence of the hybridization has to be taken into account, for an understanding of the electronic properties of these heavy fermion compounds.

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  • Received 17 August 2006

DOI:https://doi.org/10.1103/PhysRevB.75.054523

©2007 American Physical Society

Authors & Affiliations

K. S. Burch1,*, S. V. Dordevic2, F. P. Mena3, A. B. Kuzmenko4, D. van der Marel4, J. L. Sarrao1, J. R. Jeffries5, E. D. Bauer1, M. B. Maple5, and D. N. Basov5

  • 1Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 2Department of Physics, The University of Akron, Akron, Ohio 44325, USA
  • 3Material Science Center, University of Groningen, 9747 AG Groningen, The Netherlands
  • 4Département de Physique de la Matière Condensée, Université de Genève, quai Ernest-Ansermet, CH-1211 Genève, Switzerland
  • 5Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093, USA

  • *Electronic address: kburch@lanl.gov

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Issue

Vol. 75, Iss. 5 — 1 February 2007

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