کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5496328 | 1399843 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spin transport in carbon nanotubes bundles: An ab-initio study
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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 transport in carbon nanotubes bundles: An ab-initio study Spin transport in carbon nanotubes bundles: An ab-initio study](/preview/png/5496328.png)
چکیده انگلیسی
First principles investigations are performed on understanding the spin-polarized transport in carbon nanotubes and carbon nanotube bundles consisting of (8,0) and (17,0) SWCNTs kept in vertical (out-of-plane) arrangement and contacted by two CrO2 Half-Metallic-Ferromagnetic (HMF) electrodes. On comparison of the results for all the structures, it is observed that carbon nanotube bundle consisting of (17,0) CNT offers high TMR â¼100% and the transport phenomenon is tunneling, since there are no transmission states near Fermi level. However, in individual (8,0) and (17,0) CNT the transport is not because of tunneling, since there are significant number of transmission states near Fermi level. High Magneto Resistance (MR) 96% and 99% is observed in individual (8,0) and (17,0) CNTs respectively. Both TMR and Spin Injection Efficiency η (Spin-Filtration) are higher in (17,0) carbon nanotube bundle structure, which is due to carbon nanotube bundle acting as a perfect barrier in vertical (out-of-plane) arrangement resulting in negligible spin-down current (Iâ) in both Parallel Configuration (PC) and Antiparallel Configuration (APC).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 381, Issue 39, 17 October 2017, Pages 3431-3439
Journal: Physics Letters A - Volume 381, Issue 39, 17 October 2017, Pages 3431-3439
نویسندگان
Shweta Meena, Sudhanshu Choudhary,