Gamalski, A.
, Tersoff, J.
, Sharma, R.
, Ducati, C.
and Hofmann, S.
(2012),
Metastable Crystalline AuGe Catalysts Formed During Isothermal Germanium Nanowire Growth, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910747
(Accessed October 11, 2025)
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Metastable Crystalline AuGe Catalysts Formed During Isothermal Germanium Nanowire Growth
Published
Author(s)
Andrew D. Gamalski, Jerry Tersoff, , Caterina Ducati, Stephan Hofmann
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
Pub Type
Journals
Download Paper
Keywords
Ge nanowire, environmental transmission electron microscope, nanoscale system
Citation
Issues
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Created June 18, 2012, Updated October 12, 2021