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SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 28: Unconventional Superconductors

TT 28.4: Vortrag

Mittwoch, 29. März 2023, 10:15–10:30, HSZ 103

Exploring the unconventional superconducting state in Ce3PtIn11Jan Fikáček1, Sarah R. Dunsiger2, Sébastien Laughrea3, Andrea D. Bianchi3, Shinsaku Kambe4, Hironori Sakai4, Yo Tokunaga4, Manuel Brando5, and •Jeroen Custers11Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16 Prague 2, Czech Republic — 2Centre for Molecular and Materials Science, TRIUMF, Vancouver, British Columbia, Canada V6T 2A3 — 3Département de Physique, Université de Montréal, Montréal, Canada — 4Advanced Science Research Center, Japan Atomic Energy Agency, Tokai-mura, Ibaraki 319-1195, Japan — 5Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, D-01187, Dresden, Germany

The properties of the heavy fermion compound Ce3PtIn11 are certainly enigmatic. At ambient pressure, the compound displays two consecutive magnetic transitions into antiferromagnetic (AFM) states at TN1 = 2.2K and TN = 2.0K, respectively. Below Tc = 0.32K superconductivity (SC) is found. It has been speculated that AFM and SC coexist because the compound harbors two inequivalent Ce sites each having a specific environment favoring either a magnetic or superconducting state. We focus on the SC state and present specific heat, 115In NQR and recent µSR experiments at ambient pressure and down to 20mK. The results sketch a picture of an unusual unconventional SC state.

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