AUTHOR=Altuijri R. , El Maati L. Abu , Ahmad M. , Alharthi N. S. , Moslem W. M. , Elkamash I. S. 

TITLE=Evolution of nanohillocks by fullerene ion-induced localized plasma

JOURNAL=Frontiers in Physics

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2023.1254477

DOI=10.3389/fphy.2023.1254477

ISSN=2296-424X

ABSTRACT=Since surface nanostructures etch without chemicals, their development is a crucial tech-
nical process. Surface nanohillocks may be created by irradiating yttrium iron garnet (YIG)
with 30 MeV C60 cluster ions. The nanohillock creation mechanism is disputed. In this study,
we propose that the formation mechanism is a plasma collective effect of charged particles
that depends on localized rogue waves. Rogue waves will explain YIG surface nanohillock cre-
ation using a traditional hydrodynamic plasma model. Analytically solving hydrodynamic ion
fluid equations and Maxwellian electron distributions yields a nonlinear Schr¨odinger equation.
Solving the latter gives us plausible rogue wave domains. Rogue waves concentrate charged
ions from the surroundings into a small, confined zone, generating surface nanohillocks. The
relevance of different plasma parameters is highlighted in the rogue wave profile.