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Cascade of Magnetic-Field-Induced Lifshitz Transitions in the Ferromagnetic Kondo Lattice Material YbNi4P2

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Pfau,  H.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Küchler,  R.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Hamann,  S.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Steppke,  A.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Sun,  D.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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König,  M.
Markus König, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Mackenzie,  A. P.
Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Brando,  M.
Manuel Brando, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Pfau, H., Daou, R., Friedemann, S., Karbassi, S., Ghannadzadeh, S., Küchler, R., et al. (2017). Cascade of Magnetic-Field-Induced Lifshitz Transitions in the Ferromagnetic Kondo Lattice Material YbNi4P2. Physical Review Letters, 119(12): 126402, pp. 1-6. doi:10.1103/PhysRevLett.119.126402.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002E-05D7-C
Abstract
A ferromagnetic quantum critical point is thought not to exist in two-and three-dimensional metallic systems yet is realized in the Kondo lattice compound YbNi4(P, As)(2), possibly due to its onedimensionality. It is crucial to investigate the dimensionality of the Fermi surface of YbNi4 P-2 experimentally, but common probes such as angle-resolved photoemission spectroscopy and quantum oscillation measurements are lacking. Here, we study the magnetic-field dependence of transport and thermodynamic properties of YbNi4 P-2. The Kondo effect is continuously suppressed, and additionally we identify nine Lifshitz transitions between 0.4 and 18 T. We analyze the transport coefficients in detail and identify the type of Lifshitz transitions as neck or void type to gain information on the Fermi surface of YbNi4P2. The large number of Lifshitz transitions observed within this small energy window is unprecedented and results from the particular flat renormalized band structure with strong 4f-electron character shaped by the Kondo lattice effect.