کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819080 | 1026047 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superconducting transitions in frustrated Josephson-junction arrays on a dice lattice
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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
Transport measurements were carried out on dice Josephson-junction arrays with the frustration index f = 1/3 and 1/2 which possess, within the limit of the XY model, an accidental degeneracy of the ground states as a consequence of the formation of zero-energy domain walls. The experimental results are in apparent contradiction with the theoretical expectation that frustration effects in the f = 1/3 system are particularly strong enough to suppress a vortex-ordering transition down to near zero temperature. The data for f = 1/2 are more consistent with theoretical evaluations. The agreement between the experiments and the Monte Carlo simulations of a XY model for f = 1/3 suggests that the order-from-disorder mechanism for the removal of an accidental degeneracy may still be effective in the f = 1/3 system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 468, Issue 22, 15 November 2008, Pages 2267-2270
Journal: Physica C: Superconductivity - Volume 468, Issue 22, 15 November 2008, Pages 2267-2270
نویسندگان
In-Cheol Baek, Young-Je Yun, Mu-Yong Choi,