Strain enhancement of superconductivity in CePd2Si2 under pressure

Abstract

We report resistivity and calorimetric measurements on two single crystals of CePd2Si2 pressurized up to 7.4 GPa. A weak uniaxial stress induced in the pressure cell demonstrates the sensitivity of the physics to anisotropy. Stress applied along the c-axis extends the whole phase diagram to higher pressures and enhances the superconducting phase emerging around the magnetic instability, with a 40% increase of the maximum superconducting temperature, Tc, and a doubled pressure range. Calorimetric measurements demonstrate the bulk nature of the superconductivity.

4 pages, 4 figures

References in corpus (1)

• Superconductivity on the threshold of magnetism in CePd2Si2 and CeIn3

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