Anisotropic Free-Electron-Like Dispersions and Standing Waves Realized in Self-Assembled Monolayers of Glycine on Cu(100)

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• 作者：Ken Kanazawa ; Yasuyuki Sainoo ; Yasuaki Konishi ; Shoji Yoshida ; Atsushi Taninaka ; Arifumi Okada ; Maxime Berthe ; Nobuhiko Kobayashi ; Osamu Takeuchi ; Hidemi Shigekawa
• 刊名：Journal of the American Chemical Society
• 出版年：2007
• 出版时间：January 31, 2007
• 年：2007
• 卷：129
• 期：4
• 页码：740 - 741
• 全文大小：182K
• 年卷期：v.129,no.4(January 31, 2007)
• ISSN：1520-5126

文摘

Standing waves (SW), the long-range modulation of local density of states, were observed for the first time in the self-assembled monolayers of an organic molecule. Self-organization of glycine molecules is driven by the interaction based on the chirality and polarity the molecules acquire on a Cu surface. For the structure with a p(2 × 4) periodicity, anisotropic dispersion relations of the 2D electronic state, with the effective masses of 6.1 × 10^-2 and 6.1 × 10^-1 m_e, were obtained by analyzing the SW using scanning tunneling microscopy.