Abstract
We report a systematic study of the anomalous rapid oscillation (RO) phenomena in the quasi-one-dimensional organic metal ${(\mathrm{TMTSF})}_{2}$Cl${\mathrm{O}}_{4}$ in pulsed magnetic fields up to 51 T. We argue that the temperature and magnetic-field dependence of the RO amplitudes in the high-field state result from the reconstructed, nested Fermi surface topology at low temperatures in high magnetic fields. In this topology, the RO amplitudes depend on competing magnetic breakdown and Bragg reflection probabilities, along with Lifshitz-Kosevich reduction factors.
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