Quantum Oscillations in the Anomalous Phase in Sr3Ru2O7

Mercure, J. -F.; Goh, S. K.; O'Farrell, E. C. T.; Perry, R. S.; Sutherland, M. L.; Rost, A. W.; Grigera, S. A.; Borzi, R. A.; Gegenwart, P.; Mackenzie, A. P.

doi:10.1103/PhysRevLett.103.176401

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Quantum Oscillations in the Anomalous Phase in Sr₃Ru₂O₇

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Citation

Mercure, J.-.-F., Goh, S. K., O'Farrell, E. C. T., Perry, R. S., Sutherland, M. L., Rost, A. W., et al. (2009). Quantum Oscillations in the Anomalous Phase in Sr₃Ru₂O₇. Physical Review Letters, 103(17): 176401, pp. 1-4. doi:10.1103/PhysRevLett.103.176401.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-F245-8

Abstract

We report measurements of quantum oscillations detected in the putative nematic phase of Sr3Ru2O7. Improvements in sample purity enabled the resolution of small amplitude de Haas-van Alphen (dHvA) oscillations between two first order metamagnetic transitions delimiting the phase. Two distinct frequencies were observed, whose amplitudes follow the normal Lifshitz-Kosevich profile. Variations of the dHvA frequencies are explained in terms of a chemical potential shift produced by reaching a peak in the density of states, and an anomalous field dependence of the oscillatory amplitude provides information on domains.