scholarly journals Ultrafast Dynamics of Electronic Resonances in Molecules Adsorbed on Metal Surfaces: A Wave Packet Propagation Approach

2021 ◽  
Vol 17 (2) ◽  
pp. 639-654
Author(s):  
Fernando Aguilar-Galindo ◽  
Andrey G. Borisov ◽  
Sergio Díaz-Tendero
Keyword(s):  
Wave Packet ◽  
Metal Surfaces ◽  
Ultrafast Dynamics

SIX-DIMENSIONAL DYNAMICS OF DISSOCIATIVE CHEMISORPTION OF H2 ON METAL SURFACES

2005 ◽  
Vol 04 (02) ◽  
pp. 493-581 ◽  
Author(s):  
GEERT-JAN KROES ◽  
MARK F. SOMERS
Keyword(s):  
Wave Packet ◽  
Quantum Dynamics ◽  
Metal Surfaces ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Normal Incidence ◽  
Time Dependent ◽  
Dissociative Chemisorption ◽  
Generalized Gradient ◽  
Pseudo Spectral

The theory of time-dependent quantum dynamics of dissociative chemisorption of hydrogen on metal surfaces is reviewed, in the framework of electronically adiabatic scattering from static surfaces. Four implementations of the time-dependent wave packet (TDWP) method are discussed. In the direct product pseudo-spectral and the spherical harmonics pseudo-spectral methods, no use is made of the symmetry associated with the surface unit cell. This symmetry is exploited by the symmetry adapted wave packet and the symmetry adapted pseudo-spectral (SAPS) method, which are efficient for scattering at normal incidence. The SAPS method can be employed for potential energy surfaces of general form. Comparison to experiment shows that the TDWP method yields good, but not yet excellent, quantitative accuracy for dissociation of (ν = 0, j = 0) H 2 if the calculations are based on accurately fitted density functional theory calculations that are performed using the generalized gradient approximation. The influence of the molecule's vibration (rotation) is well (reasonably well) described. The theory does not yet yield quantitatively accurate results for rovibrationally inelastic scattering. The theory has helped with the interpretation of existing experimental results, for instance, by solving a parodox regarding the corrugation of Pt(111) as seen by reacting and scattering H 2. The theory has also provided some exciting new predictions, for instance, concerning where on the surface of Cu(100) H2 reacts depending on its vibrational state. Future theoretical studies of H 2 reacting on metal surfaces will likely be aimed at validating GGAs for molecule-surface interactions, and understanding trends in collisions of H 2 with complex metal surfaces.

Ultrafast Vibrational Wave Packet Dynamics of the Aqueous Tyrosyl Radical Anion Induced by Photodetachment

2021 ◽  
Author(s):  
Muhammad Shafiq Bin Mohd Yusof ◽  
Yong Liang Lim ◽  
Zhi-Heng Loh
Keyword(s):  
Ionizing Radiation ◽  
Wave Packet ◽  
Radical Anion ◽  
Aqueous Environment ◽  
Ultrafast Dynamics ◽  
Tyrosyl Radical ◽  
Elementary Processes ◽  
Biological Matter ◽  
Wave Packet Dynamics ◽  
Shed Light

The ultrafast dynamics triggered by the photodetachment of the tyrosinate dianion in aqueous environment shed light on the elementary processes that accompany the interaction of ionizing radiation with biological matter....

Ultrafast Dynamics at Semiconductor and Metal Surfaces

Science ◽  
1989 ◽  
Vol 246 (4934) ◽  
pp. 1130-1134 ◽  
Author(s):  
J. BOKOR
Keyword(s):  
Metal Surfaces ◽  
Ultrafast Dynamics
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