Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1999-05-12
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.
Brooks James S.
Hill Stephen
Maeno Yasushi
Mao Z. Q.
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