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Andreev-Fano Effect in a Hybrid Normal-Metal/Superconductor Interferometer

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摘要 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.
出处 《Communications in Theoretical Physics》 SCIE CAS CSCD 2004年第1X期155-160,共6页 理论物理通讯(英文版)
基金 国家自然科学基金,国家重点基础研究发展计划(973计划)
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