کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1546735 | 997622 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superconducting proximity correction to conductance and magnetoconductance fluctuations in random network carbon nanotubes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We investigated the superconducting proximity effect in carbon nanotubes (CNTs). Reentrant behavior caused by the proximity effect was observed in a sandwich structure of network-like CNTs coupled to NbN electrodes. The proximity effect gives rise to enhanced magnetoconductance fluctuations that are similar to universal conductance fluctuation. The proximity effect correction to the conductance and fluctuation amplitude disappears at low temperature and reaches a maximum value at about 8Â K, which corresponds to Thouless energy. This reentrant behavior was also observed in the magnetic field dependance of fluctuation amplitude. We found that a correlation magnetic field of about 3Â T induces the dephasing of the interference. This high magnetic field is due to the CNTs with small diameter. We discuss this proximity effect in these quasi-one-dimensional CNTs with random network structure in experiment and theory.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 40, Issue 1, October 2007, Pages 169-174
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 40, Issue 1, October 2007, Pages 169-174
نویسندگان
Yuan-Liang Zhong, Hayato Nakano, Tatsushi Akazaki, Kenichi Kanzaki, Yoshihiro Kobayashi, Hideaki Takayanagi,