title: Quantum oscillations in the anomalous phase in Sr3Ru2O7.
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.
authors.affiliation: Scottish Universities Physics Alliance (SUPA), School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews KY16 9SS, United Kingdom.
authors.forename: J-F
authors.initials: JF
authors.lastname: Mercure
authors.forename: S K
authors.initials: SK
authors.lastname: Goh
authors.forename: E C T
authors.initials: EC
authors.lastname: O'Farrell
authors.forename: R S
authors.initials: RS
authors.lastname: Perry
authors.forename: M L
authors.initials: ML
authors.lastname: Sutherland
authors.forename: A W
authors.initials: AW
authors.lastname: Rost
authors.forename: S A
authors.initials: SA
authors.lastname: Grigera
authors.forename: R A
authors.initials: RA
authors.lastname: Borzi
authors.forename: P
authors.initials: P
authors.lastname: Gegenwart
authors.forename: A P
authors.initials: AP
authors.lastname: Mackenzie