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

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Hydrogen adsorption on delta-Pu (100) and (111) surfaces using the generalized gradient approximation of the density functional theory with Perdew and Wang functionals have been studied at both the spin-polarized level and the…

强关联电子 · 物理学 2009-11-10 M. N. Huda , A. K. Ray

The relaxed geometries and electronic properties of the hydrogenated phases of the Si(111)-7$\times$7 surface are studied using first-principles molecular dynamics. A monohydride phase, with one H per dangling bond adsorbed on the bare…

凝聚态物理 · 物理学 2009-10-28 D. R. Alfonso , C. Noguez , D. A. Drabold , S. E. Ulloa

The adsorption of the chiral molecule lactic acid on chiral Pt surfaces is studied by Density Functional Theory calculations. First we study the adsorption of L-lactic acid on the flat Pt(111) surface. Using the oPBE-vdW functional which…

材料科学 · 物理学 2013-10-04 Jörn-Holger Franke , Daniel S. Kosov

First-principles density-functional theory and supercell models are employed to calculate the adsorption of water molecules on the Cu(100) surface. In agreement with the experimental observations, the calculations show that a H2O molecule…

材料科学 · 物理学 2009-09-29 Sanwu Wang , Yanzhao Cao , P. A. Rikvold

We have calculated the dispersion curves of H vibrational modes 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

Experimental and theoretical results for the dissociative adsorption of H_2 on vicinal Si(001) surfaces are presented. Using optical second-harmonic generation, sticking probabilities at the step sites are found to exceed those on the…

凝聚态物理 · 物理学 2009-10-31 P. Kratzer , E. Pehlke , M. Scheffler , M. B. Raschke , U. Hofer

We report on density functional total energy calculations of the step formation and interaction energies for vicinal TaC(001) surfaces. Our calculations show that double and triple-height steps are favored over single-height steps for a…

凝聚态物理 · 物理学 2009-11-07 V. B. Shenoy , C. V. Ciobanu

Atomic and electronic structures of TiO_2(110) surface with possible adsorptional, substitutional and interstitial Au or Pt elemental impurities at full and one-sixth monolayer concentrations were investigated by density functional theory…

强关联电子 · 物理学 2012-11-19 Ersen Mete , Oğuz Gülseren , Şinasi Ellialtıoğlu

We investigate the atomic and electronic structure of a single layer of pentacene on the Au(111) surface using density functional theory. To find the candidate structures we strain match the pentacene crystal geometry with the Au(111)…

材料科学 · 物理学 2013-08-06 Kurt Stokbro , Søren Smidstrup

The dissociative adsorption of methane on variously oxidized Pd, Pt and Pd-Pt surfaces is investigated using density-functional theory, as a step towards understanding the combustion of methane on these materials. For Pd-Pt alloys, models…

We present a systematic study of the atomic and electronic structure of the Si(111)-(5x2)-Au reconstruction using first-principles electronic structure calculations based on the density functional theory. We analyze the structural models…

材料科学 · 物理学 2009-11-11 Sampsa Riikonen , Daniel Sanchez-Portal

We have carried out a first principles study of the elastic properties and electronic structure for two room-temperature stable Pt silicide phases, tetragonal alpha-Pt_2Si and orthorhombic PtSi. We have calculated all of the equilibrium…

材料科学 · 物理学 2009-10-31 O. Beckstein , J. E. Klepeis , G. L. W. Hart , O. Pankratov

Hydrogen segregation to vacancies in the surface and subsurface layers of (111) and (100) surfaces of Pd is studied in the density functional theory (DFT) approach. Adsorption energies and configurations of various clusters of H atoms at…

材料科学 · 物理学 2020-06-24 A. V. Subashiev , H. H. Nee

CO adsorption on the Pt(111) surface is studied using first-principles methods. As found in a recent study [Feibelman, et al., J. Phys. Chem. B 105, 4018 (2001)], we find the preferred adsorption site within density functional theory to be…

材料科学 · 物理学 2009-11-07 Ilya Grinberg , Yashar Yourdshahyan , Andrew M. Rappe

We present a model for Desorption Induce by (Multiple) Electronic Transitions (DIET/DIMET) based on potential energy surfaces calculated with the Delta Self-Consistent Field extension of Density Functional Theory. We calculate potential…

化学物理 · 物理学 2009-11-13 Thomas Olsen , Jeppe Gavnholt , Jakob Schiøtz

We report calculations of the dissociative adsorption of H_2 at Pd (100) covered with 1/4 monolayer of sulfur using quantum dynamics as well as molecular dynamics and taking all six degrees of freedom of the two H atoms fully into account.…

凝聚态物理 · 物理学 2009-10-31 Axel Gross , Ching-Ming Wei , Matthias Scheffler

Using density-functional theory we investigate several properties of Al(111), Al(100), Al(110), and stepped Al(111) surfaces. We report results of formation energies of surfaces, steps, adatoms, and vacancies. For the adsorption and…

mtrl-th · 物理学 2008-02-03 Roland Stumpf , Matthias Scheffler

This study explores atomic and molecular adsorption on a number of early transition-metal carbides (TMC's) by means of density-functional theory calculations. Trend studies are conducted with respect to both period and group in the periodic…

材料科学 · 物理学 2012-05-14 Aleksandra Vojvodic , Carlo Ruberto , Bengt I. Lundqvist

We study the vicinal surface of the restricted solid-on-solid model coupled with the Langmuir adsorbates which we regard as two-dimensional lattice gas without lateral interaction. The effect of the vapor pressure of the adsorbates in the…

统计力学 · 物理学 2009-11-07 Noriko Akutsu , Yasuhiro Akutsu , Takao Yamamoto

The adsorption of MgO molecules on a Fe(001) surface was studied using density functional theory (DFT) and projector augmented wave methods. The energetically most favored configurations for different adsorption sites considered were…

材料科学 · 物理学 2015-12-10 D. Wiśnios , A. Kiejna , J. Korecki