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  Magnetic-Field Induced Quantum Critical Point in YbRh2Si2

Gegenwart, P., Custers, J., Geibel, C., Neumaier, K., Tayama, T., Tenya, K., et al. (2002). Magnetic-Field Induced Quantum Critical Point in YbRh2Si2. Physical Review Letters, 89(5): 056402, pp. 056402-056402. doi:10.1103/PhysRevLett.89.056402.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-311F-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-32C2-C
Genre: Journal Article

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 Creators:
Gegenwart, P.1, Author              
Custers, J.2, Author              
Geibel, C.3, Author              
Neumaier, K., Author
Tayama, T.2, Author              
Tenya, K.2, Author              
Trovarelli, O.2, Author              
Steglich, F.4, Author              
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
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              

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 Abstract: We report low-temperature calorimetric, magnetic, and resistivity measurements on the antiferromagnetic (AF) heavy- fermion metal YbRh2Si2 ( T-N=70 mK) as a function of magnetic field B. While for fields exceeding the critical value B-c0 at which T-N-->0 the low-temperature resistivity shows an AT(2) dependence, a 1/(B-B-c0) divergence of A(B) upon reducing B to B-c0 suggests singular scattering at the whole Fermi surface and a divergence of the heavy quasiparticle mass. The observations are interpreted in terms of a new type of quantum critical point separating a weakly AF ordered from a weakly polarized heavy Landau-Fermi liquid state.

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Language(s): eng - English
 Dates: 2002-07-29
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 17332
ISI: 000176907500027
DOI: 10.1103/PhysRevLett.89.056402
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Title: Physical Review Letters
  Alternative Title : Phys. Rev. Lett.
Source Genre: Journal
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Pages: - Volume / Issue: 89 (5) Sequence Number: 056402 Start / End Page: 056402 - 056402 Identifier: ISSN: 0031-9007