کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9841685 | 1525795 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase transition of the Josephson vortices in YBa2Cu3O7âδ single crystals with various oxygen deficiencies
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Phase transition of the Josephson vortices in YBa2Cu3O7âδ single crystals with various oxygen deficiencies Phase transition of the Josephson vortices in YBa2Cu3O7âδ single crystals with various oxygen deficiencies](/preview/png/9841685.png)
چکیده انگلیسی
We measured the resistivity of optimally doped, heavily overdoped, and slightly underdoped YBa2Cu3O7âδ single crystals in magnetic fields parallel to the CuO2 planes, to study the phase transition of the Josephson vortices as a function of the doping condition. We found that a first-order phase transition occurs in the Josephson vortex system in the magnetic fields between 3 and 15 T for the optimally doped samples, while only a second-order phase transition is observed for both heavily overdoped and slightly underdoped samples. These results clearly mean that the phase transition of Josephson vortices does not depend on the number of point disorders and that a novel vortex pinning independent of the point disorders is weak in the optimally doped region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volumes 426â431, Part 1, 1 October 2005, Pages 46-50
Journal: Physica C: Superconductivity - Volumes 426â431, Part 1, 1 October 2005, Pages 46-50
نویسندگان
Tomoyuki Naito, Seiya Haraguchi, Hideo Iwasaki, Terukazu Nishizaki, Norio Kobayashi,