Quantum criticality in Yb(Rh0.97Co0.03)2Si2 probed by low-temperature resistivity

Sven Friedemann; Niels Oeschler; Cornelius Krellner; Christoph Geibel; Frank Steglich

doi:10.1088/1742-6596/200/1/012038

Quantum criticality in Yb(Rh0.97Co0.03)2Si2 probed by low-temperature resistivity

Strongly Correlated Electrons 2010-07-08 v2

Authors: Sven Friedemann , Niels Oeschler , Cornelius Krellner , Christoph Geibel , Frank Steglich

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Abstract

Quantum criticality in Yb(Rh0.97Co0.03)2Si2 is investigated by means of resistivity and magnetoresistance. The partial substitution of Co leads to a stabilization of the magnetism as expected according to the application of chemical pressure for Yb systems. However, the signature of the Kondo-breakdown remains at the same position in the temperature-magnetic field phase diagram compared to stoichiometric YbRh2Si2. As a consequence, the Kondo-breakdown is situated within the antiferromagnetic phase. These results fit well within the global phase diagram under chemical pressure [1].

Keywords

quantum criticality kondo breakdown heavy fermion resistivity magnetoresistance chemical pressure antiferromagnetism

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@article{arxiv.0906.2646,
  title  = {Quantum criticality in Yb(Rh0.97Co0.03)2Si2 probed by low-temperature resistivity},
  author = {Sven Friedemann and Niels Oeschler and Cornelius Krellner and Christoph Geibel and Frank Steglich},
  journal= {arXiv preprint arXiv:0906.2646},
  year   = {2010}
}

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4 pages, 4 figures, submitted to ICM/SCES2009

Quantum criticality in Yb(Rh0.97Co0.03)2Si2 probed by low-temperature resistivity

Abstract

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