Cyclotron Resonance in the Layered Perovskite Superconductor Sr2RuO4

Details Cyclotron Resonance in the Layered Perovskite Superconductor Sr2RuO4 Cyclotron Resonance in the Layered Perovskite Superconductor Sr2RuO4

1999-05-12

arxiv.org/abs/cond-mat/9905147v2

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages + 3 figures

Scientific paper

10.1103/PhysRevLett.84.3374

We have measured the cyclotron masses in Sr2RuO4 through the observation of periodic-orbit-resonances - a magnetic resonance technique closely related to cyclotron resonance. We obtain values for the alpha, beta and gamma Fermi surfaces of (4.33+/-0.05)me, (5.81+/-0.03)me and (9.71+/-0.11)me respectively. The appreciable differences between these results and those obtained from de Haas- van Alphen measurements are attributable to strong electron-electron interactions in this system. Our findings appear to be consistent with predictions for a strongly interacting Fermi liquid; indeed, semi-quantitative agreement is obtained for the electron pockets beta and gamma.

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