Plasmon Standing Waves by Oxidation of Si(553)–Au
Plasmon Standing Waves by Oxidation of Si(553)–Au
复制标题
Si(553)–Au 氧化产生的等离激元驻波
DOI:
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发表时间:
2019
影响因子:
3.7
通讯作者:
H. Pfnur
中科院分区:
文献类型:
--
作者:
Zamin Mamiyev;M. Tzschoppe;C. Huck;A. Pucci;H. Pfnur
Self-assembled Au atomic wires on stepped Si surfaces are metallic, as evidenced by one-dimensionally dispersing plasmonic excitation. Here, we investigate the effects of oxidation on metallicity along such Au atomic wires on a regularly stepped Si(553) surface by employing infrared absorption and high-resolution electron energy loss spectroscopies. Our results indicate that only the Si environment undergoes oxidation, which has a remarkably small effect on the plasmon dispersion. However, close to k∥ → 0 the plasmon dispersion starts at increasingly higher energies as a function of oxygen exposure, which is attributed to standing wave formation on small sections of Au wires generated by the introduction of O atoms as scattering centers, not to electronic gap opening. This interpretation is in full agreement with the findings by infrared spectroscopy and low-energy electron diffraction.
影响因子:
3.7
作者:
Braun, C.;Gerstmann, U.;Schmidt, W. G.
通讯作者:
Schmidt, W. G.
影响因子:
3.7
作者:
T. Lichtenstein;J. Aulbach;J. Schäfer;R. Claessen;C. Tegenkamp;H. Pfnür
通讯作者:
H. Pfnür
影响因子:
3.3
作者:
Krieg, U.;Lichtenstein, T.;Pfnuer, H.
通讯作者:
Pfnuer, H.