کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5492020 | 1525135 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced superconductivity and superconductor to insulator transition in nano-crystalline molybdenum thin films
ترجمه فارسی عنوان
ابررسانایی و ابررسانای پیشرفته به انتقال عایق در فیلمهای نازک مولیبدن نانو کریستالی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
چکیده انگلیسی
Disorder driven superconductor to insulator transition via intermediate metallic regime is reported in nano-crystalline thin films of molybdenum. The nano-structured thin films have been deposited at room temperature using DC magnetron sputtering at different argon pressures. The grain size has been tuned using deposition pressure as the sole control parameter. A variation of particle sizes, room temperature resistivity and superconducting transition has been studied as a function of deposition pressure. The nano-crystalline molybdenum thin films are found to have large carrier concentration but very low mobility and electronic mean free path. Hall and conductivity measurements have been used to understand the effect of disorder on the carrier density and mobilities. Ioffe-Regel parameter is shown to correlate with the continuous metal-insulator transition in our samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 514, 1 June 2017, Pages 89-95
Journal: Physica B: Condensed Matter - Volume 514, 1 June 2017, Pages 89-95
نویسندگان
Shilpam Sharma, E.P. Amaladass, Neha Sharma, V. Harimohan, S. Amirthapandian, Awadhesh Mani,