Ground state properties of a Zeeman-split heavy metal
Strongly Correlated Electrons
2007-05-23 v1
Abstract
A Zeeman field affects the metallic heavy fermion ground state in two ways: (i) it splits the spin-degerenate conduction sea, leaving spin up and spin down Fermi surfaces with different band curvature; (ii) it competes with the Kondo effect and thus suppresses the mass enhancement. Taking these two effects into account, we compute the quasiparticle effective mass as a function of applied field strength within hybridization mean field theory. We also derive an expression for the optical conductivity, which is relevant to infrared spectroscopy measurements.
Keywords
Cite
@article{arxiv.cond-mat/0509778,
title = {Ground state properties of a Zeeman-split heavy metal},
author = {K. S. D. Beach},
journal= {arXiv preprint arXiv:cond-mat/0509778},
year = {2007}
}
Comments
8 pages, 3 figures