Abstrak 
Superior Regularity In Erosion Patterns By Planar Subsurface Channeling
Superior Regularity In Erosion Patterns By Planar Subsurface Channeling
Alex Redinger, Henri Hansen, Udo Linke, Yudi Rosandi, Herbert M. Urbassek, Thomas Michely
Universitas Padjadjaran, Physical Review Letters 96, 106103 (2006), week ending 17 MARCH 2006, The American Physical Society
Bahasa Inggris
Universitas Padjadjaran, Physical Review Letters 96, 106103 (2006), week ending 17 MARCH 2006, The American Physical Society
Pt(111)
Alex Redinger, Henri Hansen, Udo Linke, Yudi Rosandi, Herbert M. Urbassek, Thomas Michely
Universitas Padjadjaran, Physical Review Letters 96, 106103 (2006), week ending 17 MARCH 2006, The American Physical Society
Bahasa Inggris
Universitas Padjadjaran, Physical Review Letters 96, 106103 (2006), week ending 17 MARCH 2006, The American Physical Society
Pt(111)
The onset of pattern formation through exposure of Pt(111) with 5 keV Ar+ ions at grazing incidence has been studied at 550 K by scanning tunneling microscopy and is supplemented by molecular-dynamics simulations of single ion impacts. A consistent description of pattern formation in terms of atomic scale mechanisms is given. Most surprisingly, pattern formation depends crucially on the angle of incidence of the ions. As soon as this angle allows subsurface channeling of the ions, pattern regularity and alignment with respect to the ion beam greatly improves. These effects are traced back to the positionally aligned formation of vacancy islands through the damage created by the ions at dechanneling locations.
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