Oscillatory Magnetoresistance Caused by Field-Dependent Matrix Element for Scattering in Bechgaard Salts
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概要
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The transverse magnetoresistance of quasi 10 conductors is shown to have a neweffect of the title not originating in the orbital quantization like the Shubnikov-deHaas effect. The model band energy is a symplified version of Gor'kov-Leded'smodel. The eigen energy and wave function in the transverse magnetic field are obtain-ed in the normal state and also in a SDW state. By a variational method themagnetoresistance is calculated for typical processes including the electron-phononand Umklapp Coulomb scatterings in the normal and SDW states. The matrixelements for these processes are oscillatory due to interference of the incoming andoutgoing electron waves modified by the field. The small-period oscillation observedin the magnetoresistance of the Bechgaard salts is ascribed to this new mechanismworking with the electron-phonon interaction in the SDW state.
- 社団法人日本物理学会の論文
- 1986-05-15
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