Fermi surface reconstruction and dimensional topology change in Nd-doped CeCoIn5
| Autor: | Tobias Förster, E. L. Green, E. S. Choi, R. Hu, Cedomir Petrovic, J. Klotz, Ilya Sheikin, K. Götze, J.-H. Park, J. Wosnitza, D. Graf |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Strongly Correlated Electrons (cond-mat.str-el) Doping FOS: Physical sciences Fermi surface 02 engineering and technology 021001 nanoscience & nanotechnology Topology 01 natural sciences Magnetic field Condensed Matter - Strongly Correlated Electrons Effective mass (solid-state physics) Quantum critical point 0103 physical sciences Spin density wave 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B 98(2018), 081105 (R) |
| Popis: | 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)]. Comment: 7 pages |
| Databáze: | OpenAIRE |
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