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The overtones of the C-H stretch vibrations on the diamond C(001)(2x1)-H surface are studied by means of electron energy loss spectroscopy (EELS). The dimer structure of the C-H bonds gives rise to the intra-dimer coupling of the C-H stretch vibrations. The fundamental excitations appear at 360 and 362 meV and are assigned to the antisymmetric and symmetric stretch modes, respectively. The overtone...
We have investigated vibrational modes of single-crystalline ice thin film in the region 30-350 cm -1 by means of electron energy loss spectroscopy. In addition to the losses due to the bulk ice, we observe a surface mode at 95(100) cm -1 which is assigned as the frustrated translation of the outermost D 2 O(H 2 O) along the surface normal direction. Upon...
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