Normal state of the unconventional superconductor Sr2RuO4 in high magnetic fields

摘要: Abstract The layered perovskite oxide Sr2RuO4 appears to be an ideal material investigate unconventional superconductivity in real depth. We have performed a de Haas–van Alphen (dHvA) study this fields up 33 T and temperatures down 30 mK. results indicate that the Fermi liquid description of normal state remains valid highest fields, with unchanged mass renormalization linear spin susceptibility. In quantum critical point scenario superconductivity, would corresponding order parameter only couples weakly magnetic field. were also able, for first time, directly observe beat dHvA oscillations γ-surface which is largest thermodynamically most important surface sheet. This complements further extends presented elsewhere.