Fermi surface reconstruction and dimensional topology change in Nd-doped CeCoIn${}_5$

Abstract

We performed low-temperature de Haas-van Alphen (dHvA) effect measurements on a Ce${}_{1-x}$Nd${}_x$CoIn${}_5$ 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)].

arXiv comment7 pages

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Cited by in corpus (3)

• Theory of Difference Frequency Quantum Oscillations
• Quantum well states in fractured crystals of the heavy fermion material CeCoIn${}_5$
• Evolution of Magnetic Order from the Localized to the Itinerant Limit