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  Lifshitz transitions and quasiparticle de-renormalization in YbRh2Si2

Naren, H. R., Friedemann, S., Zwicknagl, G., Krellner, C., Geibel, C., Steglich, F., et al. (2013). Lifshitz transitions and quasiparticle de-renormalization in YbRh2Si2. New Journal of Physics, 15: 093032, pp. 093032-1-093032-13. doi:10.1088/1367-15/9/093032.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E50-A Version Permalink: http://hdl.handle.net/21.11116/0000-0000-B6DC-B
Genre: Journal Article

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 Creators:
Naren, H. R.1, Author              
Friedemann, S.1, Author              
Zwicknagl, G., Author
Krellner, C.2, Author              
Geibel, C.3, Author              
Steglich, F.4, Author              
Wirth, S.5, Author              
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
4Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              
5Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863460              

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 Abstract: We study the effect of magnetic fields up to 15 T on the heavy fermion state of YbRh2Si2 via Hall effect and magnetoresistivity measurements down to 50 mK. Our data show anomalies at three different characteristic fields. We compare our data to renormalized band structure calculations through which we identify Lifshitz transitions associated with the heavy fermion bands. The Hall measurements indicate that the de-renormalization of the quasiparticles, i.e. the destruction of the local Kondo singlets, occurs smoothly while the Lifshitz transitions occur within rather confined regions of the magnetic field.

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Language(s): eng - English
 Dates: 2013-09-23
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 670777
ISI: 000324729000002
DOI: 10.1088/1367-15/9/093032
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Title: New Journal of Physics
Source Genre: Journal
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Pages: - Volume / Issue: 15 Sequence Number: 093032 Start / End Page: 093032-1 - 093032-13 Identifier: ISSN: 1367-2630