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5Â¥: Originally posted by brucefan at 2016-10-10 17:01:24
You can estimate the frequency of the oscillation (which is the inverse of the period) and compare it with some other frequencies. I guess it should be related to some vibrational (phonon) modes in  ...

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2Â¥: Originally posted by brucefan at 2016-10-10 14:05:52
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2Â¥: Originally posted by brucefan at 2016-10-10 14:05:52
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