Dresden 2020 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 41: Unconventional Superconductors
TT 41.3: Vortrag
Mittwoch, 18. März 2020, 15:45–16:00, HSZ 201
Muon spin relaxation studies of time reversal symmetry breaking superconductivity in Sr2RuO4 by the application of uniaxial pressure — •Shreenanda Ghosh1, Vadim Grinenko1, 2, Rajib Sarkar1, Felix Brückner1, Jean-Christophe Orain3, Artem Nikitin3, Joonbum Park4, Mark Barber4, Naoki Kikugawa5, Jake Bobowski6, 7, Dmitry Sokolov4, Takuto Miyoshi6, Matthias Elender3, Yoshiteru Maeno6, Andrew Mackenzie4, Hubertus Luetkens3, Clifford Hicks4, and Hans-Henning Klauss1 — 1IFMP, Technische Universität Dresden — 2IFW, Dresden — 3Paul Scherrer Institute, Switzerland — 4Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — 5National Institute for Material Science, Japan — 6Department of Physics, Graduate School of Science, Kyoto University, Kyoto, Japan — 7University of British Columbia, Kelowna, Canada
After more than two decades of extensive research, the idea regarding the symmetry of the superconducting order parameter of Sr2RuO4 is still lacking a consensus. One key prediction for Sr2RuO4, a splitting of the superconducting and time-reversal symmetry breaking(TRSB) transitions under uniaxial pressure have not been observed. Here, we report a large stress-induced splitting between the onset temperatures of superconductivity and TRSB transitions observed by muon spin relaxation (µSR) measurements on Sr2RuO4 placed under uniaxial pressure. In order to perform these technically challenging experiments, a customized uniaxial pressure cell was developed, which will be introduced.