کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5457222 | 1515547 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of the diffusion constant in disordered mesoscopic Au rings from the temperature dependence of the current
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Determination of the diffusion constant in disordered mesoscopic Au rings from the temperature dependence of the current Determination of the diffusion constant in disordered mesoscopic Au rings from the temperature dependence of the current](/preview/png/5457222.png)
چکیده انگلیسی
A simple calculation to determine the diffusion constant D for electrons in disorder mesoscopic Au rings from the temperature dependence of the current obtained by Chandrasekhar et al. (1991) [1] gives larger D than the diffusion constant Dâ² obtained from Einstein's relation via resistance measurements. In addition, the curve-fitting function employed by them does not agree well with the temperature-dependent data below 10Â mK. Using a more precise calculation based on the quasi-particle picture, we show that the discrepancy between the fitting function and the experimental data below 10Â mK is reduced and that a newly obtained D is close to Dâ². The method proposed here is very simple to determine the diffusion constant in a small closed loop via the curve-fitting of the temperature-dependent data, which needs no resistance measurements for the use of Einstein's relation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volumes 255â256, April 2017, Pages 38-41
Journal: Solid State Communications - Volumes 255â256, April 2017, Pages 38-41
نویسندگان
Isao Tomita,