Cascade of magnetic field induced Lifshitz transitions in the ferromagnetic Kondo lattice material YbNi4P2

H. Pfau, R. Daou, S. Friedemann, S. Karbassi, S. Ghannadzadeh, R. Kuechler, S. Hamann, A. Steppke, D. Sun, M. Koenig, A. P. Mackenzie, K. Kliemt, Cornelius Krellner, Manuel Brando

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Abstract

We have studied the magnetic field dependence of transport and thermodynamic properties of the Kondo lattice compound YbNi4P2 for fields up to 30 T. On top of a continuous suppression of the Kondo effect with increasing field we identify nine Lifshitz transitions between 0.4 and 18 T. Using a detailed analysis of the measured transport coefficients, we were able to identify in most cases the type of Lifshitz transition being of neck or void type. This large number of Lifshitz transitions observed within this small energy window is unprecedented and is the result of the particular flat renormalized band structure with strong 4f-electron character shaped by the Kondo lattice effect which acts not just on a single, but on multiple bands.
Original languageEnglish
Article number126402
Number of pages6
JournalPhysical Review Letters
Volume119
DOIs
Publication statusPublished - 21 Sep 2017

Keywords

  • Fermi surface
  • Kondo effect
  • magnetotransport
  • Thermopower

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