Surface layering in liquid gallium: An X-ray reflectivity study.
نویسندگان
چکیده
Surface-induced atomic layering in liquid gallium has been observed using x-ray reflectivity, ultrahigh vacuum conditions, and sputtered clean surfaces. Reflectivity data, collected on a supercooled liquid sample to momentum transfers as large as qz 3.0 Å21, exhibit a strong maximum near 2.4 Å21 indicating a layer spacing that is comparable to its atomic dimensions. The amplitude of the electron density oscillations decays with a characteristic length of 6 Å. This is unexpectedly twice that of recent results for Hg, and the difference may be related to covalent bonding or supercooling.
منابع مشابه
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عنوان ژورنال:
- Physical review letters
دوره 75 13 شماره
صفحات -
تاریخ انتشار 1995