کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1868229 | 1038426 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spin-polarized transport through a coupled double-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: Spin-polarized transport through a coupled double-dot Spin-polarized transport through a coupled double-dot](/preview/png/1868229.png)
چکیده انگلیسی
We propose, theoretically, a new type of design that generates the spin-polarized current through a mesoscopic device composed of lateral double-quantum-dot in the company of time oscillating and spin-polarization dependent tunneling. A formula for the spin-dependent current is obtained and is applied to discuss the transport properties. We demonstrate that the spin and charge currents are controllable by adjusting the gate voltage, the frequency of driving field and the magnitude of the magnetic field as well. In particular an interesting resonance phenomenon of the spin current is qualitatively explained in terms of the exact solutions of a time-dependent Schrödinger equation for an electron moving between the two quantum dots.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 358, Issue 1, 2 October 2006, Pages 39-46
Journal: Physics Letters A - Volume 358, Issue 1, 2 October 2006, Pages 39-46
نویسندگان
Hui Yu, J.-Q. Liang,