کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1820205 | 1525768 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Motion of current-driven vortex solids with weak pinning in the Corbino disk
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report on the dynamic response of a weakly disordered vortex lattice driven by a radial current I in an amorphous MoxGe1âx film with a Corbino-disk (CD) geometry. In CD, the vortices circulate around the center of the sample by feeling a nonuniform Lorentz force inversely proportional to the radius of rotation. We observe the peak in the dynamic critical current, as well as, in the static critical current, as a function of the magnetic field. This means that, even when the vortices are in circular motion, they feel the maximum pinning force just prior to 'dynamic' melting. As I is increased in the solid state, the vortices near the center are first depinned and then exhibit the plastic-flow-like rotation. This is in contrast to previous work for a YBa2Cu3O7âδ single-crystal, in which the elastic rotation is observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 468, Issues 7â10, 1 April 2008, Pages 613-616
Journal: Physica C: Superconductivity and its Applications - Volume 468, Issues 7â10, 1 April 2008, Pages 613-616
نویسندگان
S. Okuma, Y. Suzuki, Y. Yamazaki, N. Kokubo,