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Andreev-Fano Effect in a Hybrid Normal-Metal/Superconductor Interferometer
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作者 ZHUYu mazhong-shui +1 位作者 SUNQing-Feng LINTsung-Han 《Communications in Theoretical Physics》 SCIE CAS CSCD 2004年第1X期155-160,共6页
We report on a new type of Fano effect, named as Andreev-Fano effect, in a hybrid normal-metal/supeeconductor (N/S) interferometer embedded with a quantum dot. Compared with the conventional Fano effect, AndreevFano e... We report on a new type of Fano effect, named as Andreev-Fano effect, in a hybrid normal-metal/supeeconductor (N/S) interferometer embedded with a quantum dot. Compared with the conventional Fano effect, AndreevFano effect has some new features related to the characteristics of Andreev reflection. In the Iinear response regime, the line shape is the square of the conventional Fano shape, while in the nonlinear transport, a sharp resonant structure is superposed on an expanded interference pattern, which is qualitatively different from the conventional Fano effect. The phase dependence of the hybrid N/S interferometer is also distinguished from those of all-N or all-S interferometers. 展开更多
关键词 Andreev-Fano效应 掺杂常规金属/超导体干涉计 量子点 格林函数 哈密顿系统
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