Strain enhancement of superconductivity in CePd2Si2 under pressure

Details Strain enhancement of superconductivity in CePd2Si2 under pressure Strain enhancement of superconductivity in CePd2Si2 under pressure

2002-02-22

arxiv.org/abs/cond-mat/0202390v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1088/0953-8984/14/28/102

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.

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