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Anisotropic energy scale for degenerate Fermi and non-Fermi liquids near a quantum critical phase transition in YbRh2Si2

Abstract : Based on Si-29 nuclear spin-lattice relaxation time (T-1) data on a single crystal of YbRh2Si2, the coexisting Fermi liquid and non-Fermi liquid states around the quantum critical phase transition have been found to be sensitive to the direction of the applied magnetic field. Augmented scaling analysis shows that the anisotropic characteristic temperature and field are roughly ten times larger for H parallel to c than for H parallel to a, consistent with a previously obtained anisotropic phase diagram.
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https://hal-cea.archives-ouvertes.fr/cea-01731484
Contributor : Jérôme Planès <>
Submitted on : Wednesday, March 14, 2018 - 11:54:55 AM
Last modification on : Tuesday, September 1, 2020 - 3:24:04 PM

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S. Kambe, H. Sakai, Y. Tokunaga, Gerard Lapertot, T. D. Matsuda, et al.. Anisotropic energy scale for degenerate Fermi and non-Fermi liquids near a quantum critical phase transition in YbRh2Si2. Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2015, 91 (16), pp.161110. ⟨10.1103/PhysRevB.91.161110⟩. ⟨cea-01731484⟩

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