کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5374981 1504283 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tuning excess noise by Aharonov-Bohm interferometry
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Tuning excess noise by Aharonov-Bohm interferometry
چکیده انگلیسی
A voltage bias applied to a conductor induces a change of the current noise with respect to the equilibrium noise known as excess noise. We analyze the excess noise of the electronic current flowing through a mesoscopic Aharonov-Bohm ring threaded by a magnetic flux, coupled to a side gate, and contacted by two metallic electrodes. It is shown that the excess noise can be controlled both magnetically and electrostatically, demonstrating the full tunability of the system. At zero frequency, the ratio of the noise strength to the current (Fano factor) can thereby be minimized. Remarkably, at finite frequency, regions of negative excess noise emerge.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 375, Issues 2–3, 5 October 2010, Pages 291-295
نویسندگان
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