تقرير
Relation between Superconducting Gap Minima and Nesting Vector in YNi2B2C
| العنوان: | Relation between Superconducting Gap Minima and Nesting Vector in YNi2B2C |
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| المؤلفون: | Baba, T., Yokoya, T., Tsuda, S., Watanabe, T., Nohara, M., Oguchi, H. Takagi T., Shin, S. |
| سنة النشر: | 2008 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We have performed ultrahigh-resolution angle-resolved photoemission spectroscopy to directly observe the large superconducting (SC) gap anisotropy (GA) of YNi2B2C. The result shows large SC GA with a smooth variation along an intersection of a Fermi surface (FS) around the $\Gamma$-Z line and nearly isotropic SC gap values for two intersections of FSs around the X-P line but with a point-like non-zero minimum only for one sheet. The point-like SC gap minimum can be connected by the nesting vector reported from band calculations. The results show unexpectedly complicated SC GA of borocarbide superconductors. Comment: 13 pages, 4 figures, submitted to Phys. Rev. Lett |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/0812.0406 |
| رقم الأكسشن: | edsarx.0812.0406 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |