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- W1968354906 endingPage "084705" @default.
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- W1968354906 abstract "We measured the magnetic susceptibility, high-field magnetization, magnetoresistance, specific heat, and Hall coefficient, together with the electrical resistivity under high pressures and magnetic fields, for the heavy-fermion compound YbRh2Zn20 with the cubic CeCr2Al20-type structure. The metamagnetic behavior was observed at Hm = 65 kOe for the magnetic field along the <100> direction below Tχmax = 5.3 K, at which the temperature of the magnetic susceptibility indicates a broad maximum. The coefficient A of the T2 dependence of electrical resistivity ρ=ρ0 + AT2 and the electronic specific heat coefficient C/T possess a broad maximum at Hm. The metamagnetic field Hm is found to decrease with increasing pressure and to become zero at a critical pressure Pc ≃5.2 GPa. Correspondingly, the A value increases drastically in magnitude, and the Fermi liquid relation is no longer satisfied at 5.2 GPa in zero magnetic field, implying a non-Fermi liquid state. On the other hand, at magnetic fields of H > 20 kOe, the low-temperature resistivity exhibits a T2 dependence even at 5.2 GPa. The A coefficient decreases rapidly with increasing magnetic field. These results indicate that an electronic state at 5.2 GPa corresponds to the quantum critical point." @default.
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- W1968354906 date "2013-08-15" @default.
- W1968354906 modified "2023-10-02" @default.
- W1968354906 title "Metamagnetic Behavior and Effect of Pressure on the Electronic State in Heavy-Fermion Compound YbRh<sub>2</sub>Zn<sub>20</sub>" @default.
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- W1968354906 doi "https://doi.org/10.7566/jpsj.82.084705" @default.
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