Spontaneous pattern formation induced by ion bombardment of binary compounds
A theory is developed that explains the genesis of the strikingly regular hexagonal arrays of nanoscale mounds that can form when a flat surface of a binary compound is subjected to normal-incidence ion bombardment. We find that the species with the higher sputter yield is concentrated at the peaks...
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| Veröffentlicht in: | Physical review letters 2010-10, Vol.105 (14), p.145501-145501, Article 145501 |
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| container_end_page | 145501 |
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| container_title | Physical review letters |
| container_volume | 105 |
| creator | Bradley, R Mark Shipman, Patrick D |
| description | A theory is developed that explains the genesis of the strikingly regular hexagonal arrays of nanoscale mounds that can form when a flat surface of a binary compound is subjected to normal-incidence ion bombardment. We find that the species with the higher sputter yield is concentrated at the peaks of the nanodots and that hysteretic switching between the flat and the hexagonally ordered state can occur as the sample temperature is varied. Surface ripples are predicted to emerge for a certain range of the parameters. |
| doi_str_mv | 10.1103/PhysRevLett.105.145501 |
| format | Article |
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| issn | 0031-9007 1079-7114 |
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| source | American Physical Society Journals |
| title | Spontaneous pattern formation induced by ion bombardment of binary compounds |
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