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Elucidating Surface Structure with Action Spectroscopy

MPS-Authors
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Liu,  Yun
Chemical Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons144706

Wu,  Zongfang
Chemical Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21907

Naschitzki,  Matthias
Chemical Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21548

Gewinner,  Sandy
Molecular Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22079

Schöllkopf,  Wieland
Molecular Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21774

Kuhlenbeck,  Helmut
Chemical Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21524

Freund,  Hans-Joachim
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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jacs.9b13164.pdf
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Citation

Liu, Y., Wu, Z., Naschitzki, M., Gewinner, S., Schöllkopf, W., Li, X., et al. (2020). Elucidating Surface Structure with Action Spectroscopy. Journal of the American Chemical Society, 142(5), 2665-2671. doi:10.1021/jacs.9b13164.


Cite as: https://hdl.handle.net/21.11116/0000-0005-A330-C
Abstract
Surface Action Spectroscopy, a vibrational spectroscopy method developed in recent years at the Fritz Haber Institute is employed for structure determination of clean and H2O-dosed (111) magnetite surfaces. Surface structural information is revealed by using the microscopic surface vibrations as a fingerprint of the surface structure. Such vibrations involve just the topmost atomic layers, and therefore the structural information is truly surface related. Our results strongly support the view that regular Fe3O4(111)/Pt(111) is terminated by the so-called Fetet1 termination, that the biphase termination of Fe3O4(111)/Pt(111) consists of FeO and Fe3O4(111) terminated areas, and we show that the method can differentiate between different water structures in H2O-derived adsorbate layers on Fe3O4(111)/Pt(111). With this, we conclude that the method is a capable new member in the set of techniques providing crucial information to elucidate surface structures. The method does not rely on translational symmetry and can therefore also be applied to systems which are not well ordered. Even an application to rough surfaces is possible.