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We introduce local density of states in normal-conductor-superconductor compound systems and injectivity, emissivity to describe
the transmission properties in these systems. Then we study the admittance of a one-channel conductor which contains a scattering
region and Andreev reflection with the discrete potential model and effective scattering approach. 相似文献
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Spin Polarization Through Resonant unnelling in a Magnetic Double—Barrier and Double—Well Quantum Structure 下载免费PDF全文
Recent studies have indicated that spin polarization of the conductance shows strong osicllation and zero average for electrons resonant tunnelling throught a magnetic double-barrier and double-well quantum structure.Our studies indicate that strong oscillation of the polarization of the conductance is not physically intrinsic but inaccurate due to problems of numeration and insufficient numerical accuracy.We also indicate that its average of the spin polarization is not zero.The reasonable explanation is presented in details. 相似文献
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