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Title: Anomalous patterns and nearly defect-free ripples produced by bombarding silicon and germanium with a beam of gold ions

We demonstrate that surface ripples with an exceptionally high degree of order can develop when germanium is bombarded with a broad beam of gold ions. In contrast, if silicon is sputtered with an Au{sup −} beam, patches of ripples with two distinct wave vectors can emerge. These types of order can be understood if the coupling between the surface morphology and composition is taken into account.
Authors:
;  [1] ;  [2] ;  [3]
  1. Saha Institute of Nuclear Physics, Sector - I, Block - AF, Bidhan Nagar, Kolkata 700064 (India)
  2. Department of Mathematics, Colorado State University, Fort Collins, Colorado 80523 (United States)
  3. Department of Physics, Colorado State University, Fort Collins, Colorado 80523 (United States)
Publication Date:
OSTI Identifier:
22280563
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; GERMANIUM; GOLD IONS; ION BEAMS; IRRADIATION; MORPHOLOGY; PHYSICAL RADIATION EFFECTS; SILICON; SPUTTERING; SURFACES