Interplay between Kondo Suppression and Lifshitz Transitions in YbRh2Si2 at 
High Magnetic Fields

Pfau, H.; Daou, R.; Lausberg, S.; Naren, H. R.; Brando, M.; Friedemann, S.; Wirth, S.; Westerkamp, T.; Stockert, U.; Gegenwart, P.; Krellner, C.; Geibel, C.; Zwicknagl, G.; Steglich, F.

doi:10.1103/PhysRevLett.110.256403

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Interplay between Kondo Suppression and Lifshitz Transitions in YbRh₂Si₂ at High Magnetic Fields

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

/persons/resource/persons126577

Daou, R.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Lausberg, S.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126775

Naren, H. R.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126548

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

/persons/resource/persons126607

Friedemann, S.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126910

Wirth, S.
Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126907

Westerkamp, T.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126697

Stockert, U.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126613

Gegenwart, P.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126710

Krellner, C.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126614

Geibel, C.
Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126861

Steglich, F.
Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Pfau, H., Daou, R., Lausberg, S., Naren, H. R., Brando, M., Friedemann, S., et al. (2013). Interplay between Kondo Suppression and Lifshitz Transitions in YbRh₂Si₂ at High Magnetic Fields. Physical Review Letters, 110(25): 256403, pp. 1-5. doi:10.1103/PhysRevLett.110.256403.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-1E9C-4

Abstract

We investigate the magnetic field dependent thermopower, thermal conductivity, resistivity, and Hall effect in the heavy fermion metal YbRh2Si2. In contrast to reports on thermodynamic measurements, we find in total three transitions at high fields, rather than a single one at 10 T. Using the Mott formula together with renormalized band calculations, we identify Lifshitz transitions as their origin. The predictions of the calculations show that all experimental results rely on an interplay of a smooth suppression of the Kondo effect and the spin splitting of the flat hybridized bands.