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相关论文: Electronic properties of H on vicinal Pt surfaces:…

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We present a first principles-quality potential energy surface (PES) describing the inter-atomic forces for hydrogen atoms interacting with free-standing graphene. The PES is a high-dimensional neural network potential that has been…

We present a combination of theoretical calculations and experiments for the low-lying vibrational excitations of H and D atoms adsorbed on the Pt(111) surface. The vibrational band states are calculated based on the full three-dimensional…

统计力学 · 物理学 2009-11-07 S. C. Badescu , P. Salo , T. Ala-Nissila , S. C. Ying , K. Jacobi , Y. Wang , K. Bedurftig , G. Ertl

We present a density-functional theory study addressing the on-surface adsorption of oxygen at the Pd(11N) (N =3,5,7) vicinal surfaces, which exhibit (111) steps and (100) terraces of increasing width. We find the binding to be…

材料科学 · 物理学 2007-05-23 Yongsheng Zhang , Jutta Rogal , Karsten Reuter

Here we present a structural study of pentacene (Pn) thin films on vicinal Ag(111) surfaces by He atom diffraction measurements and density functional theory (DFT) calculations supplemented with van der Waals (vdW) interactions. Our He atom…

强关联电子 · 物理学 2012-11-19 E. Mete , I. Demiroglu , E. Albayrak , G. Bracco , S. Ellialtioglu , M. F. Danisman

Equilibrium atomic configurations and electron energy structure of ethanol adsorbed on the Si (111) surface are studied by the first-principles density functional theory. Geometry optimization is performed by the total energy minimization…

计算物理 · 物理学 2008-02-11 A. V. Gavrilenko , C. E. Bonner , V. I. Gavrilenko

The potential energy surface (PES) of dissociative adsorption of H_2 on Pd(100) is investigated using density functional theory and the full-potential linear augmented plane wave (FP-LAPW) method. Several dissociation pathways are…

mtrl-th · 物理学 2009-10-28 Steffen Wilke , Matthias Scheffler

We performed high-dimensional quantum dynamical calculations of the dissociative adsorption and associative desorption of hydrogen on Cu(111). The potential energy surface (PES) is obtained from density functional theory calculations. Two…

mtrl-th · 物理学 2009-10-28 A. Gross , B. Hammer , M. Scheffler , W. Brenig

We have performed ab initio electronic structure calculations of C and S adsorption on two vicinal surfaces of Pd with different terrace geometry and width. We find both adsorbates to induce a significant perturbation of the surface…

材料科学 · 物理学 2009-11-11 Faisal Mehmood , Sergey Stolbov , Talat S. Rahman

In this study used is an approach based on measurements of the total energy distribution (TED) of field emitted electrons in order to examine the properties of Pd (133) from the aspect of both hydrogen adsorption and surface hydrides…

其他凝聚态物理 · 物理学 2009-11-13 A. Tomaszewska , Z. M. Stepien

Relaxed atomic geometries and chemisorption energies have been calculated for the dissociative adsorption of molecular hydrogen on vicinal Si(001) surfaces. We employ density-functional theory, together with a pseudopotential for Si, and…

凝聚态物理 · 物理学 2009-10-31 E. Pehlke , P. Kratzer

We analyze the electronic structure of atoms in the first, second and third periods using the electronic kinetic energy density and stress tensor density, which are local quantities motivated by quantum field theoretic consideration,…

原子物理 · 物理学 2016-03-31 Hiroo Nozaki , Kazuhide Ichikawa , Akitomo Tachibana

Using the plane wave pseudopotential method within the density functional theory with the generalized gradient approximation for exchange and correlation potential, we have calculated adsorption energies (Ead), diffusion barriers and the…

材料科学 · 物理学 2007-05-23 Sergey Stolbov , Talat S. Rahman

The adsorption of hydrogen at nonpolar GaN(1-100) surfaces and its impact on the electronic and vibrational properties is investigated using surface electron spectroscopy in combination with density functional theory (DFT) calculations. For…

材料科学 · 物理学 2017-06-28 L. Lymperakis , J. Neugebauer , M. Himmerlich , S. Krischok , M. Rink , J. Kröger , V. M. Polyakov

We summarize and discuss some of the available experimental and theoretical data important for understanding the role played by subsurface sites in dissociative chemisorption calculations for the H$_2$/Pd(111) system. Then we use a…

chem-ph · 物理学 2009-10-28 Ole Martin Løvvik , Roar Aspesæter Olsen

The structure and dynamics of atomic oxygen adsorbed on Ag(410) and Ag(210) surfaces have been investigated using density functional theory. Our results show that the adsorption configuration in which O adatoms decorate the upper side of…

材料科学 · 物理学 2009-11-10 N. Bonini , A. Kokalj , A. Dal Corso , S. de Gironcoli , S. Baroni

The FCC structure of Pd$\rm_{1-x}$Ag$\rm_{x}$ ($\rm{x}=$ 0.25, 0.50, 0.75) alloys is considered as a fuel cell component in this study. We have looked into its qualities as a component of a fuel cell to see whether it could be potentially…

材料科学 · 物理学 2022-04-07 S. S. Awulachew , K. N. Nigussa

Molecular adsorption at organic/metal interfaces depends on a range of mechanisms: covalent bonds, charge transfer, Pauli repulsion and van der Waals (vdW) interactions shape the potential energy surface (PES), making it key to…

计算物理 · 物理学 2020-09-29 Lukas Hörmann , Andreas Jeindl , Oliver T. Hofmann

We have calculated the surface phonon dispersion curves for H on Pt(111), using first-principles, total energy calculations based on a mixed-basis set and norm-conserving pseudopotentials. Linear response theory and the harmonic…

其他凝聚态物理 · 物理学 2009-11-11 Sampyo Hong , Talat S. Rahman , Rolf Heid , Klaus Peter Bohnen

The presence of sulfur atoms on the Pd(100) surface is known to hinder the dissociative adsorption of hydrogen. Using density-functional theory and the full-potential linear augmented plane-wave method, we investigate the potential energy…

凝聚态物理 · 物理学 2009-10-30 C. M. Wei , A. Gross , M. Scheffler

The structures and energetics of organic molecules adsorbed onto clean and H-passivated Si(001)-(2$\times$1) surfaces have been calculated using density functional theory. For benzene adsorbed on the clean Si surface the tight-bridge…

材料科学 · 物理学 2009-11-13 Karen Johnston , Risto M. Nieminen
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