We performed low-temperature de Haas-van Alphen (dHvA) effect measurements on a Ce1−xNdxCoIn5 series, for x = 0.02, 0.05, 0.1, and 1, down to T = 40 mK using torque magnetometry in magnetic felds up to 35 T. Our results indicate that a Fermi-surface (FS) reconstruction occurs from a quasi-two-dimensional (2D) topology for Nd-2% to a rather three-dimensional (3D) for Nd-5%, thus reducing the possibility of perfect FS nesting. The FS evolves further with increasing Nd content with no observed divergence of the effective mass between Nd-2% and 10%, consistent with the crossing of a spin density wave (SDW) type of quantum critical point (QCP). Our results elucidate the origin of the Q-phase observed at the 5% Nd-doping level [Raymond et al., J. Phys. Soc. Jpn. 83, 013707 (2014)].
@article{arxiv.1808.03470,
title = {Fermi surface reconstruction and dimensional topology change in Nd-doped CeCoIn$_5$},
author = {J. Klotz and K. Götze and I. Sheikin and T. Förster and D. Graf and J. -H. Park and E. S. Choi and R. Hu and C. Petrovic and J. Wosnitza and E. L. Green},
journal= {arXiv preprint arXiv:1808.03470},
year = {2018}
}