کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819953 | 1525771 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mode locking and noise of driven vortices near the peak-effect regime
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present the measurements of broadband voltage noise generated by the driven vortices near the peak-effect regime of a thick amorphous MoxGe1âx film. We focus on a change in voltage noise as the vortex system undergoes mode locking (ML), which is a dynamic resonance between the ac drive superimposed on the dc drive and lattice-oscillation modes excited collectively. By sweeping the dc current I at fixed ac drive, we find the step-like structure in the current-voltage (I-V) characteristics indicative of ML. At high frequencies f (but well below the ac-drive frequency) the noise spectrum is f-independent. We find a trend for the amplitude of noise (at high f) to decrease in the ML step.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volumes 463â465, 1 October 2007, Pages 290-293
Journal: Physica C: Superconductivity and its Applications - Volumes 463â465, 1 October 2007, Pages 290-293
نویسندگان
S. Okuma, J. Inoue, N. Kokubo,