کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1862927 | 1037618 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Persistent current and transmission probability in the Aharonov-Bohm ring with an embedded quantum dot
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Persistent current and transmission probability in the Aharonov-Bohm ring with an embedded quantum dot Persistent current and transmission probability in the Aharonov-Bohm ring with an embedded quantum dot](/preview/png/1862927.png)
چکیده انگلیسی
Persistent current and transmission probability in the Aharonov-Bohm (AB) ring with an embedded quantum dot (QD) are studied using the technique of the scattering matrix. For the first time, we find that the persistent current can arise in the absence of magnetic flux in the ring with an embedded QD. The persistent current and the transmission probability are sensitive to the lead-ring coupling and the short-range potential barrier. It is shown that increasing the lead-ring coupling or the short-range potential barrier causes the suppression of the persistent current and the increasing resonance width of the transmission probability. The effect of the potential barrier on the number of the transmission peaks is also investigated. The dependence of the persistent current and the transmission probability on the magnetic flux exhibits a periodic property with period of the flux quantum.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 372, Issue 13, 24 March 2008, Pages 2326-2331
Journal: Physics Letters A - Volume 372, Issue 13, 24 March 2008, Pages 2326-2331
نویسندگان
Suzhi Wu, Ning Li, Guojun Jin, Yu-qiang Ma,