کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1547597 | 1512909 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spin-dependent magnetotransport through one or more rings in the presence of the Rashba and Dresselhaus terms of the spin-orbit interaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Spin-dependent magnetotransport through one or more rings in the presence of the Rashba and Dresselhaus terms of the spin-orbit interaction Spin-dependent magnetotransport through one or more rings in the presence of the Rashba and Dresselhaus terms of the spin-orbit interaction](/preview/png/1547597.png)
چکیده انگلیسی
Magnetotransport through one or several quasi-one-dimensional rings, in the presence of the Rashba (RSOI) and Dresselhaus (DSOI) terms of the spin-orbit interaction (SOI) and of a magnetic field B, is investigated. The RSOI field and an effective DSOI field are taken as ER=ER(sinγ1er+cosγ1ez) and ED=ED(sinγ2er+cosγ2ez), their strengths are denoted by α and β, respectively. The exact one-electron eigenvalues and eigenfunctions are obtained and used to evaluate the transmission as a function of α, β, and of the angles γ1,γ2. Because the RSOI term couples the electronic orbit (along the θ direction) with the Pauli matrices Ïz and Ïr while the DSOI term couples it with Ïθ, they affect the electronic spin transport through a ring in distinctly different ways. The resulting transmission shows a considerable structure as a function of the angles γ1 or γ2. The same holds for the transmission, versus α or β, with the SOI present only in one arm of the ring and for that through two rings with the same or different radii. Various results of the literature, valid for β=0, are readily recovered. For weak magnetic fields B⩽1T the influence of the Zeeman term on the transmission, assessed by perturbation theory, is negligible.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 34, Issues 1â2, August 2006, Pages 359-362
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 34, Issues 1â2, August 2006, Pages 359-362
نویسندگان
P. Vasilopoulos, X.F. Wang,