تقرير
Novel metastable metallic and semiconducting germaniums
| العنوان: | Novel metastable metallic and semiconducting germaniums |
|---|---|
| المؤلفون: | Selli, Daniele, Baburin, Igor A., Martonak, Roman, Leoni, Stefano |
| سنة النشر: | 2012 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | By means of ab initio metadynamics runs we explored the lower-pressure region of the phase diagram of germanium. A monoclinic germanium phase with four-membered rings, less dense than diamond and compressible into \beta-tin phase (tI4) was found. A metallic bct-5 phase, mechanically stable down to room conditions appeared between diamond and tI4. mC16 is a narrow-gap semiconductor, while bct-5 is metallic and potentially still superconducting in the very low pressure range. This finding may help resolving outstanding experimental issues. Comment: 6 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1209.3753 |
| رقم الأكسشن: | edsarx.1209.3753 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |