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  Quantum oscillations near the metamagnetic transition in Sr3Ru2O7

Mercure, J.-.-F., Rost, A. W., O'Farrell, E. C. T., Goh, S. K., Perry, R. S., Sutherland, M. L., et al. (2010). Quantum oscillations near the metamagnetic transition in Sr3Ru2O7. Physical Review B, 81(23): 235103, pp. 1-12. doi:10.1103/PhysRevB.81.235103.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-F284-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-F286-5
Genre: Journal Article

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 Creators:
Mercure, J. -F.1, Author
Rost, A. W.1, Author
O'Farrell, E. C. T.1, Author
Goh, S. K.1, Author
Perry, R. S.1, Author
Sutherland, M. L.1, Author
Grigera, S. A.1, Author
Borzi, R. A.1, Author
Gegenwart, P.1, Author
Gibbs, A. S.1, Author
Mackenzie, A. P.2, Author              
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1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: We report a detailed investigation of quantum oscillations in Sr3Ru2O7, observed inductively (the de Haas-van Alphen effect) and thermally (the magnetocaloric effect). Working at fields from 3 to 18 T allowed us to straddle the metamagnetic transition region and probe the low- and high-field Fermi liquids. The observed frequencies are strongly field dependent in the vicinity of the metamagnetic transition, and there is evidence for magnetic breakdown. We also present the results of a comprehensive rotation study. The most surprising result concerns the field dependence of the measured quasiparticle masses. Contrary to conclusions previously drawn by some of us as a result of a study performed with a much poorer signal-to-noise ratio, none of the five Fermi-surface branches for which we have good field-dependent data gives evidence for a strong-field dependence of the mass. The implications of these experimental findings are discussed.

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 Dates: 2010-06-02
 Publication Status: Published in print
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Title: Physical Review B
  Other : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 81 (23) Sequence Number: 235103 Start / End Page: 1 - 12 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008