The Pd ( 100 ) – ð ffiffiffi 5 p ffiffiffi 5 p Þ R 27 - O surface oxide revisited
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چکیده
Combining high-resolution core-level spectroscopy, scanning tunneling microscopy and density-functional theory calculations we reanalyze the Pd(1 0 0)–ð ffiffiffi 5 p ffiffiffi 5 p ÞR27 -O surface oxide phase. We find that the prevalent structural model, a rumpled PdO(0 0 1) film suggested by previous low energy electron diffraction (LEED) work [Surf. Sci. 494 (2001) L799], is incompatible with all three employed methods. Instead, we suggest the two-dimensional film to consist of a strained PdO(1 0 1) layer on top of Pd(1 0 0). LEED intensity calculations show that this model is compatible with the experimental data of Saidy et al. 2003 Elsevier B.V. All rights reserved.
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تاریخ انتشار 2003