کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5351455 | 1503562 | 2017 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of electron-surface scattering and thiol adsorption on the electrical resistivity of gold ultrathin films
ترجمه فارسی عنوان
اثر پراکندگی سطح الکترونی و جذب تیئول بر مقاومت الکتریکی فیلم های فلزی طلایی
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کلمات کلیدی
فیلمهای اولترا مقاومت تیول، حمل و نقل برق، طلا،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
In order to study the effect of electron-surface scattering in gold ultrathin films (â¼10Â nm), we have prepared a set of Au samples on mica on top of a chromium seedlayer (<1Â nm). Chromium is added as a metallic surfactant which enables surpassing the electric percolation threshold for substrate temperatures above room temperature. We prepared samples with the same thickness but different topographies setting different substrate temperatures. These modifications modulate the contributions of the different electronic scattering mechanisms to the film resistivity. A second set of gold thin films deposited on mica at room temperature, with different thicknesses between 8 and 100Â nm, was also prepared to compare the resisitivities of both sets through Mayadas and Shatzkes theory. We found that in samples with thicknesses below 15Â nm, the electron-surface scattering is indeed the dominant mechanism influencing the film resistivity. To obtain further evidence of this prevalence, we developed a discrimination method based on thiol adsorption. The film with the highest resistivity increase is the sample in which electron-surface scattering is dominant. With this method, we observed that a large enhancement of the electron-surface scattering not only occurs in samples with large diameters grains, but also if the film has a reduced surface roughness.â
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 407, 15 June 2017, Pages 322-327
Journal: Applied Surface Science - Volume 407, 15 June 2017, Pages 322-327
نویسندگان
Ricardo Henriquez, Valeria Del Campo, Claudio Gonzalez-Fuentes, Jonathan Correa-Puerta, Luis Moraga, Marcos Flores, Rodrigo Segura, Sebastián Donoso, Francisca MarÃn, Sergio Bravo, Patricio Häberle,