Weak magnetoresistance of disordered heavy fermion systems
Strongly Correlated Electrons
2007-05-23 v1
Abstract
We compare the magnetoresistance of UCuPd with calculations done within the disordered heavy fermion framework of Miranda et al. using a phenomenological spectral function for the Anderson model, calibrated against Bethe ansatz and quantum Monte Carlo results. Both in experiment and theory, we find a weak negative magnetoresistance. In contrast, thermodynamic quantities have a strong field dependence. Using qualitative arguments broad distribution of Kondo scales, we explain the different field dependence of susceptibility and resistivity.
Cite
@article{arxiv.cond-mat/9805127,
title = {Weak magnetoresistance of disordered heavy fermion systems},
author = {A. Chattopadhyay and M. Jarrell and H. R. Krishnamurthy and H. K. Ng and J. Sarrao and Z. Fisk},
journal= {arXiv preprint arXiv:cond-mat/9805127},
year = {2007}
}
Comments
4 pages, 3 figures