Cyclotron resonance harmonics in the organic superconductor β′′-(BEDT-TTF)₂SF₅CH₂CF₂SO₃; observation of a new kind of effective mass renormalization
Edwards, R. S. · Symington, J. A. · Ardavan, A. · Singleton, J. · Rzepniewski, E. · McDonald, R. D. · Schlueter, J. · Kini, A. M.
Original · EN
Cyclotron resonance, along with its second and third harmonics, has been observed in the quasi-two-dimensional organic superconductor β′′-(BEDT-TTF)₂SF₅CH₂CF₂SO₃. The harmonic content is richly angle-dependent, and is interpreted in terms of the interlayer warping of the Fermi surface giving rise to the cyclotron resonance. In a departure from Kohn's theorem, but in agreement with recent theoretical predictions, the effective mass deduced from the cyclotron resonance measurements is greater than that determined from magnetic quantum oscillations.
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