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Magnetic and superconducting properties of a pressure-induced superconductor CePd5Al2 |
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| Authors: | F. Honda M.A. Measson N. Yoshitani K. Sugiyama M. Hagiwara K. Kindo E. Yamamoto M. Ishizuka R. Settai |
| Affiliation: | a Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan b Low Temperature Center, Osaka University, Toyonaka, Osaka 560-0043, Japan c KYOKUGEN, Research Center for Materials Science at Extreme Conditions, Osaka University, Osaka 560-8531, Japan d Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan e Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan f Renovation Center of Instruments for Science Education and Technology, Osaka University, Toyonaka, Osaka 560-0043, Japan g Department of Physics, Faculty of Science, Kyoto Sangyo University, Kyoto 603-8555, Japan |
| Abstract: | We investigated the magnetic and electronic properties of an antiferromagnet and pressure-induced superconductor CePd5Al2 by measuring the magnetization and de Haas-van Alphen effect, together with the electrical resistivity under pressure and magnetic field. Magnetic measurements including the high field magnetization at 1.3 K reveal several magnetic transitions and quite complex magnetic phase diagram of this compound. Electrical resistivity measurements have been performed using diamond anvil cell up to 12 GPa for the magnetic fields  and [1 0 0]. The upper critical field in superconductivity is anisotropic between  and [1 0 0] in the tetragonal structure, reflecting the quasi-two dimensional electronic state. |
| Keywords: | CePd5Al2 Pressure-induced superconductivity de Haas-van Alphen effect Quantum critical point High-field magnetization Magnetic phase diagram |
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