Hydrogen adsorption configurations on Ge(001) probed with STM

Saedi, Amirmehdi and Poelsema, Bene and Zandvliet, Harold J.W. (2009) Hydrogen adsorption configurations on Ge(001) probed with STM. Physical Review B: Condensed matter and materials physics, 79 (15). p. 153402. ISSN 1098-0121

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Abstract:	The adsorption of hydrogen on Ge(001) has been studied with scanning tunneling microscopy at 77 K. For low doses (100 L) a variety of adsorption structures has been found. We have found two different atomic configurations for the Ge-Ge-H hemihydride and a third configuration that is most likely induced by the dissociative adsorption of molecular hydrogen. The Ge-Ge-H hemihydride is either buckled antiparallel or parallel to the neighboring Ge-Ge dimers. The latter configuration has recently been predicted by M. W. Radny et al. [J. Chem. Phys. 128, 244707 (2008)], but not observed experimentally yet. Due to the presence of phasons some dimer rows appear highly dynamic.
Item Type:	Article
Copyright:	© 2009 American Physical Society
Faculty:	Science and Technology (TNW)
Research Group:	Physics of Interfaces and Nanomaterials (PIN)
Link to this item:	http://purl.utwente.nl/publications/61340
Official URL:	http://dx.doi.org/10.1103/PhysRevB.79.153402
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