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  • Title: Quantum oscillations in the anomalous phase in Sr3Ru2O7.
    Author: Mercure JF, Goh SK, O'Farrell EC, Perry RS, Sutherland ML, Rost AW, Grigera SA, Borzi RA, Gegenwart P, Mackenzie AP.
    Journal: Phys Rev Lett; 2009 Oct 23; 103(17):176401. PubMed ID: 19905773.
    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.
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