We have performed measurements of the temperature dependence of the magnetoresistance up to 9 T in bulk single crystals of UPt3 with the magnetic field along the b axis, the easy magnetization axis. We have confirmed previous results for transverse magnetoresistance with the current along the c axis, and report measurements of the longitudinal magnetoresistance with the current along the b axis. The presence of a linear term in both cases indicates broken orientational symmetry associated with magnetic order. With the current along the c axis the linear term appears near 5 K, increasing rapidly with decreasing temperature. For current along the b axis the linear contribution is negative.
@article{arxiv.cond-mat/0606818,
title = {Magnetoresistance of UPt3},
author = {T. M. Lippman and J. P. Davis and H. Choi and J. Pollanen and W. P. Halperin},
journal= {arXiv preprint arXiv:cond-mat/0606818},
year = {2008}
}
Comments
6 pages, 3 figures, submitted to Quantum Fluids and Solids Conference (QFS 2006)