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

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

2009-06-15

arxiv.org/abs/0906.2646v2

J. Phys.: Conf. Ser. (2010) 100, 012038

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures, submitted to ICM/SCES2009

Scientific paper

10.1088/1742-6596/200/1/012038

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].

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