Imaging of the Hydrogen Subsurface Site in RutileTiO2
| Autor: | Adam S. Foster, Mona C. R. Jensen, Flemming Besenbacher, Werner A. Hofer, Jeppe V. Lauritsen, Bjørk Hammer, Georg H. Enevoldsen, Henry P. Pinto |
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| Přispěvatelé: | Perustieteiden korkeakoulu, School of Science, Teknillisen fysiikan laitos, Department of Applied Physics, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2009 |
| Předmět: |
Kelvin probe force microscope
Materials science Physics Scanning tunneling spectroscopy General Physics and Astronomy subsurface regions Spin polarized scanning tunneling microscopy Nanotechnology Conductive atomic force microscopy Scanning capacitance microscopy Molecular physics law.invention Condensed Matter::Materials Science law Scanning ion-conductance microscopy scanning tunneling microscopy H atoms AFM Scanning tunneling microscope density functional theory Photoconductive atomic force microscopy |
| Zdroj: | Enevoldsen, G H, Pinto, H, Foster, A S, Jensen, M C R, Hofer, W, Hammer, B, Lauritsen, J V & Besenbacher, F 2009, ' Imaging of the Hydrogen Subsurface Site in Rutile TiO 2 ', Physical Review Letters, vol. 102, no. 13, pp. 136103-136107 . https://doi.org/10.1103/PhysRevLett.102.136103 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.102.136103 |
| Popis: | From an interplay between simultaneously recorded noncontact atomic force microscopy and scanning tunneling microscopy images and simulations based on density functional theory, we reveal the location of single hydrogen species in the surface and subsurface layers of rutile ${\mathrm{TiO}}_{2}$. Subsurface hydrogen atoms (${\mathrm{H}}_{\mathrm{sub}}$) are found to reside in a stable interstitial site as subsurface OH groups detectable in scanning tunneling microscopy as a characteristic electronic state but imperceptible to atomic force microscopy. The combined atomic force microscopy, scanning tunneling microscopy, and density functional theory study demonstrates a general scheme to reveal near surface defects and interstitials in poorly conducting materials. |
| Databáze: | OpenAIRE |
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