Field-induced quantum critical point in CeCoIn5
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چکیده
منابع مشابه
Field-induced quantum critical point in CeCoIn5.
The resistivity of the heavy-fermion superconductor CeCoIn5 was measured as a function of temperature, down to 25 mK and in magnetic fields of up to 16 T applied perpendicular to the basal plane. With increasing field, we observe a suppression of the non-Fermi liquid behavior, rho approximately T, and the development of a Fermi liquid state, with its characteristic rho=rho(0)+AT2 dependence. Th...
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We measured the specific heat and resistivity of heavy fermion CeCoIn5 between the superconducting critical field H(c2)=5 T and 9 T, with the field in the [001] direction, and at temperatures down to 50 mK. At 5 T the data show a non-Fermi liquid (NFL) behavior down to the lowest temperatures. At the field above 8 T the data exhibit a crossover from the Fermi liquid to a non-Fermi liquid behavi...
متن کاملNonvanishing energy scales at the quantum critical point of CeCoIn5.
Heat and charge transport were used to probe the magnetic field-tuned quantum critical point in the heavy-fermion metal CeCoIn5. A comparison of electrical and thermal resistivities reveals three characteristic energy scales. A Fermi-liquid regime is observed below T(FL), with both transport coefficients diverging in parallel and T(FL) -->0 as H --> Hc, the critical field. The characteristic te...
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متن کاملResponse of the Heavy-Fermion Superconductor CeCoIn5 to Pressure: Roles of Dimensionality and Proximity to a Quantum-Critical Point
We report measurements of the pressure-dependent superconducting transition temperature Tc and electrical resistivity of the heavy-fermion compound CeCoIn5. Pressure moves CeCoIn5 away from its proximity to a quantum-critical point at atmospheric pressure. Experimental results are qualitatively consistent with theoretical predictions for strong-coupled, d-wave superconductivity in an anisotropi...
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ژورنال
عنوان ژورنال: Physica C: Superconductivity
سال: 2004
ISSN: 0921-4534
DOI: 10.1016/j.physc.2004.03.120