Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5422231 | Surface Science | 2014 | 16 Pages |
Abstract
Oscillatory relaxation of surface photovoltage has been observed by time-resolved photoemission spectroscopy on a Si(111)7Â ÃÂ 7 surface with a temporal period of several tens of nanoseconds. The oscillation was reproduced by solving non-linear Master equations that describe surface recombination of electron-hole pairs associated with the formation of exciton-like states at the surface. Appearance of non-linear phenomena is naturally expected by the model when high density photo-excited carriers are generated by the high power laser pulse.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
M. Ogawa, R.-Y. Liu, C.-H. Lin, S. Yamamoto, R. Yukawa, R. Hobara, S.-J. Tang, I. Matsuda,