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Quantum oscillations near the metamagnetic transition in Sr3Ru2O7
- Source :
- Phys. Rev. B 81, 235103 (2010)
- Publication Year :
- 2009
-
Abstract
- We report 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 T 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.<br />Comment: 12 pages, 12 figures, submitted to PRB
- Subjects :
- Condensed Matter - Strongly Correlated Electrons
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 81, 235103 (2010)
- Publication Type :
- Report
- Accession number :
- edsarx.0909.1215
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.81.235103