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Quantum oscillations in the anomalous phase in Sr3Ru2O7

Mercure, JF; Goh, SK; O'Farrell, ECT; Perry, RS; Sutherland, ML; Rost, A; Grigera, SA; ... Mackenzie, AP; + view all (2009) Quantum oscillations in the anomalous phase in Sr3Ru2O7. Physical Review Letters , 103 (17) , Article 176401. 10.1103/PhysRevLett.103.176401. Green open access

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Abstract

We report measurements of quantum oscillations detected in the putative nematic phase of Sr3Ru2O7. Significant improvements in sample purity enabled the resolution of small amplitude dHvA oscillations between two first order metamagnetic transitions delimiting the phase. Two distinct frequencies were observed, and their amplitudes follow the normal Lifshitz-Kosevich profile. The Fermi surface sheets seem to correspond to a subset of those detected outside the phase. 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.

Type: Article
Title: Quantum oscillations in the anomalous phase in Sr3Ru2O7
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.103.176401
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.103.176401
Language: English
Additional information: © 2009 The American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1398588
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