Barrier model in muon implantation and application to Lu2O3
authors Vilao, RC; Vieira, RBL; Alberto, HV; Gil, JM; Weidinger, A; Lichti, RL; Mengyan, PW; Baker, BB; Lord, JS
nationality International
journal PHYSICAL REVIEW B
keywords SHALLOW-DONOR; HYDROGEN; OXIDE; STATES; AL2O3
abstract In implantation experiments, the implanted particle is shot with a certain energy into the material and comes to rest at a site which may not correspond to the final position. The rearrangements of the surrounding atoms to accommodate the particle, i.e., the reaction with the host atoms may require some time and lead to delayed formation of the final states. In the case of the implantation of positive muons, this rearrangement process can be followed on a timescale of nanoseconds to microseconds. A delay is expected if an energy barrier inhibits the prompt reaction. We note that the barrier height may change during the rearrangement of the lattice, thus giving rise to a two-dimensional potential profile for the conversion process. The barrier model describes the reaction path of the muon in analogy to the passage over a mountain with a saddle point. The passing over the saddle point corresponds to the lowest energy trajectory. As an example, we discuss the application of the barrier model to solid Lu2O3.
publisher AMER PHYSICAL SOC
issn 2469-9950
year published 2018
volume 98
issue 11
digital object identifier (doi) 10.1103/PhysRevB.98.115201
web of science category Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
subject category Materials Science; Physics
unique article identifier WOS:000444349300006
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journal impact factor 3.813
5 year journal impact factor 3.704
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