Lévy-flight intermixing: anomalous nanoscale diffusion in Pt/Ti
| dc.creator | Süle, P. | |
| dc.creator | Menyhárd, M. | |
| dc.date | 2008-02-15 | |
| dc.date | 2008-02-18 | |
| dc.date.accessioned | 2026-07-07T09:21:13Z | |
| dc.date.available | 2026-07-07T09:21:13Z | |
| dc.description | Probing the anomalous nanoscale intermixing using molecular dynamics (MD) simulations in Pt/Ti bilayer we reveal the superdiffusive nature of interfacial atomic transport. It is shown that the Pt atoms undergo anomalous atomic transport across the anisotropic interface of Pt/Ti with suprisingly high rates which can be characterized as Lévy flights. Lévy flight is not a unique phenomenon in nature, however, no such events have been reported yet for bulk interdiffusion. In particular, the low-energy (0.5 keV) ion-sputtering induced transient enhanced intermixing has been studied by MD simulations. Ab initio density functional calculations have been used to check and reparametrize the employed heteronuclear interatomic potential. The Lévy-intermixing behavior explains the high diffusity tail in the concentration profile obtained by Auger electron spectroscopy depth profiling (AES-DP) analysis in Pt/Ti bilayer (reported in ref.: P. Süle, {\em et al.}, J. Appl. Phys., {\bf 101}, 043502 (2007)). | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0802.2220 | |
| dc.identifier | http://arxiv.org/abs/0802.2220 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/154944 | |
| dc.subject | Materials Science | |
| dc.title | Lévy-flight intermixing: anomalous nanoscale diffusion in Pt/Ti | |
| dc.type | text |