Abstract
A self-consistent calculation of the potential-energy surface for a molecule (${\mathrm{H}}_{2}$) on a metal surface [Mg(0001)] is presented. The following experimentally observable adsorption features are identified and interpreted: (i) an activation barrier for molecular adsorption, (ii) a mobile molecularly chemisorbed state ("precursor state"), (iii) an activation barrier for dissociation (${{E}_{a}}^{d}$), and (iv) a strong dependence of ${{E}_{a}}^{d}$ on the adsorption-site geometry.
Keywords
Affiliated Institutions
Related Publications
Surface Corrugation in the Dissociative Adsorption of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>on Cu(100)
First-principles calculations of the potential energy surface for ${\mathrm{H}}_{2}$ dissociation on the Cu(100) surface are presented. The height of the transition state above ...
Multidimensional Potential Energy Surface for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Dissociation over Cu(111)
We present ab initio density functional calculations within the generalized gradient approximation for ${\mathrm{H}}_{2}$ dissociating over Cu(111). The minimum barrier for diss...
Quantum and thermal effects in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>dissociative adsorption: Evaluation of free energy barriers in multidimensional quantum systems
We have evaluated the sticking probability and activation energy for dissociation of ${\mathrm{H}}_{2}$ molecules on a Cu(110) surface by a reversible work formulation of quantu...
Oxygen Vacancies as Active Sites for Water Dissociation on Rutile<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>TiO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mo>(</mml:mo><mml:mn>110</mml:mn><mml:mo>)</mml:mo></mml:math>
Through an interplay between scanning tunneling microscopy experiments and density functional theory calculations, we determine unambiguously the active surface site responsible...
Band structure and its temperature dependence for type-III<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi><mml:mi mathvariant="normal">g</mml:mi><mml:mi mathvariant="normal">T</mml:mi><mml:mi mathvariant="normal">e</mml:mi><mml:mo>/</mml:mo><mml:mi mathvariant="normal">H</mml:mi><mml:mi mathvariant="normal">g</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cd</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi mathvariant="normal">Te</mml:mi></mml:math>superlattices and their semimetal constituent
Intersubband transitions in ${\mathrm{H}\mathrm{g}\mathrm{T}\mathrm{e}/\mathrm{H}\mathrm{g}}_{1\ensuremath{-}x}{\mathrm{Cd}}_{x}\mathrm{Te}$ superlattices and their dependence o...
Publication Info
- Year
- 1981
- Type
- article
- Volume
- 46
- Issue
- 4
- Pages
- 257-260
- Citations
- 231
- Access
- Closed
External Links
Social Impact
Social media, news, blog, policy document mentions
Citation Metrics
Cite This
Identifiers
- DOI
- 10.1103/physrevlett.46.257