| Author(s): |
Andrew D. Gamalski; J Tersoff; Renu Sharma; Caterina Ducati; Stephan Hofmann; |
| Title: |
Metastable Crystalline AuGe Catalysts Formed During Isothermal Germanium Nanowire Growth |
| Published: |
June 19, 2012 |
| Abstract: |
We observe the formation of metastable AuGe phases without quenching, during strictly isothermal nucleation and growth of Ge nanowires, using video-rate lattice-resolved environmental transmission electron microscopy. We explain the unexpected formation of these phases through a novel pathway involving large and abrupt variations in composition rather than temperature. The metastable catalyst has important implications for nanowire growth; and more broadly, the isothermal process provides both a new approach to growing and studying metastable phases, and a new perspective on their formation. |
| Citation: |
Physical Review Letters |
| Volume: |
108 |
| Issue: |
25 |
| Keywords: |
Ge nanowire; environmental transmission electron microscope; nanoscale system |
| Research Areas: |
Electron microscopy (EM, TEM, SEM, STEM) |
| PDF version: |
 Click here to retrieve PDF version of paper (249KB) |
