Crowdions using the Frenkel-Kontorova model
Journal Article
·
· Phys. Rev., B: Solid State; (United States)
Crowdions in crystals are studied using the Frenkel-Kontorova model. All properties of the crowdion are sensitive functions of H = ..pi../sup 2/V/sub 0//..beta..a/sup 2/. Here V/sub 0/ is the amplitude of the periodic potential in which atoms of the crowdion row move. ..beta.. is the spring constant giving forces between neighboring atoms on the row and a is the period of the periodic potential. The configuration and the energy (relative to the perfect crystal) are calculated. The migration energy required to move the crowdion along the row and the frequencies and configurations of the low-frequency resonant modes are calculated. An attempt is made to estimate H for gold since the self-interstitial in gold may be a crowdion.
- Research Organization:
- Physics Department and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
- OSTI ID:
- 6518596
- Journal Information:
- Phys. Rev., B: Solid State; (United States), Journal Name: Phys. Rev., B: Solid State; (United States) Vol. 18:10; ISSN PLRBA
- Country of Publication:
- United States
- Language:
- English
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