dHvA E ect with Quantum Interference Oscillation due to Magnetic Breakdown
نویسندگان
چکیده
The e ect of the magnetic breakdown on the dHvA oscillation is studied by full-quantum numerical calculation for a two-dimensional model. We demonstrate that the interference di erence oscillation, usually designated as , exists even in the thermodynamic quantity; this result is contrary to the conventional semi-classical picture. In addition, the dependencies of various oscillations of the magnetization on the eld, temperature and band gap are examined thoroughly and compared with the semi-classical theory by Falicov and Stachoviak, which is based on the Pippard's coupled network model and the Lifshitz-Kosevich formula. We discuss the relevance of our calculation to the observed interference di erence frequencies in the dHvA oscillation of magnesium and in the SdH oscillation of two-dimensional organic conductors.
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