| Issue |
Europhys. Lett.
Volume 57, Number 1, January 2002
|
|
|---|---|---|
| Page(s) | 74 - 79 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00543-x | |
| Published online | 01 September 2002 | |
Aubry transition in a real material: Prediction for its existence in an incommensurate gold/gold interface
Département de recherche fondamentale sur
la matière condensée
SP2M, CEA-Grenoble - 38054 Grenoble Cedex 9, France
Corresponding author: FLancon@cea.fr
Received:
13
August
2001
Accepted:
15
October
2001
Recent studies have shown that a special
grain boundary in gold is stable and is an incommensurate
interface related to the irrational number 
. Using the
theoretical framework of quasicrystals, we show that
this system can undergo an Aubry transition: the two
grains can glide freely along the ideal interface; if we
increase the interactions between the grains by applying a
compression perpendicular to the interface, there is a
threshold after which the grains are pinned to each
other. With a numerical analysis of the energy landscape
corresponding to the shift of the grains, we determine the
atomistic mechanism of the grain sliding.
PACS: 61.72.Mm – Grain and twin boundaries / 61.44.Fw – Incommensurate crystals / 62.20.Qp – Tribology and hardness
© EDP Sciences, 2002
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