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A long-standing controversy related to the dimer pattern formed by S atoms in methanethiol ($CH_{3}SH$) on the Au(111) surface has been resolved using density functional theory. For the first time, dimerization of methanethiol adsorbates on…

材料科学 · 物理学 2009-11-13 Jian-Ge Zhou , Quinton L. Williams , Frank Hagelberg

Using first-principles calculations based on density-functional theory (DFT) we investigated the effects of the van der Waals (vdW) interactions on the structural and electronic properties of anthracene and pentacene adsorbed on the Ag(111)…

材料科学 · 物理学 2017-03-16 Juliana M. Morbec , Peter Kratzer

The energetics and structures of physisorbed and chemisorbed alkanethiols on Au(111) have been systematically investigated up to 10 carbon atoms using van der Waals (vdW) corrected density functional theory (DFT) calculations. The role of…

化学物理 · 物理学 2018-03-07 Ersen Mete , Merve Yortanlı , Mehmet Fatih Danışman

Phenalenyl (C$_{13}$H$_9$) is an open-shell spin-$1/2$ nanographene. Using scanning tunneling microscopy (STM) inelastic electron tunneling spectroscopy (IETS), covalently-bonded phenalenyl dimers have been shown to feature conductance…

Using scanning tunneling microscopy together with the first-principles density functional theory calculations we study structural properties of the Si(111)5x2-Au surface covered by Ag adatoms. The STM topography data show that a…

介观与纳米尺度物理 · 物理学 2014-10-09 A. Stepniak , M. Krawiec , M. Jalochowski

We investigate the molecular acceptors 3,4,9,10-perylene-tetracarboxylic acid dianhydride (PTCDA), 2,3,5,6-tetra uoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ), and 4,5,9,10-pyrenetetraone (PYTON) on Ag(111) using densityfunctional theory.…

材料科学 · 物理学 2015-06-17 Oliver T. Hofmann , Viktor Atalla , Nikolaj Moll , Patrick Rinke , Matthias Scheffler

Phenalenyl is a radical nanographene with triangular shape that hosts an unpaired electron with spin S = 1/2. The open-shell nature of phenalenyl is expected to be retained in covalently bonded networks. Here, we study a first step in that…

介观与纳米尺度物理 · 物理学 2023-07-20 N. Krane , E. Turco , A. Bernhardt , D. Jacob , G. Gandus , D. Passerone , M. Luisier , M. Juríček , R. Fasel , J. Fernández-Rossier , P. Ruffieux

The DFT/vdW-WF2s1 method based on the generation of localized Wannier functions, recently developed to include the van der Waals interactions in the Density Functional Theory and describe adsorption processes on metal surfaces by taking…

化学物理 · 物理学 2016-04-06 Pier Luigi Silvestrelli , Alberto Ambrosetti

We report on a theoretical study of adsorption of 4-Acetylbiphenyl molecule and its diffusion properties in the main directions of the Au(111) surface. Structural changes of the molecule, which are induced by adsorption lead to stronger…

材料科学 · 物理学 2020-04-30 V. Zobac , R. Robles , N. Lorente

Adsorption of benzoic acid on the (110) surface of rutile, both unreconstructed and (1x2)- reconstructed ones, at saturation coverage of one benzoate per two adjacent five-coordinated Ti5c sites has been studied using DFT simulations, as…

材料科学 · 物理学 2014-07-08 Xiang Zhao , David R. Bowler

It is often assumed that the hydrogen atoms in the thiol groups of a benzene-1,4-dithiol dissociate when Au-benzene-1,4-dithiol-Au junctions are formed. We demonstrate, by stability and transport properties calculations, that this…

The excited state electronic structure of $\pi$ conjugated phenylene-acetylene oligomers is calculated using time-dependent density functional theory (TD-DFT) approaches. The theoretical fluorescence spectra are analyzed in terms of…

化学物理 · 物理学 2015-06-26 R. J. Magyar , S. Tretiak , Y. Gao , H. L. Wang , A. P. Shreve

We present the results of a density functional theory (DFT) investigation of the surfaces of rutile-like vanadium dioxide, VO2(R). We calculate the surface energies of low Miller index planes, and find that the most stable surface…

化学物理 · 物理学 2015-06-11 Thomas A. Mellan , Ricardo Grau-Crespo

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

In a multiply hydrogenated polymer of phenalenyl tessellation molecules (PTMs), spatially overlapping zero modes appear, and three spin-aligned electron spins per PTM are generated through direct exchange interactions in the strongly…

材料科学 · 物理学 2025-04-01 Kenshin Komatsu , Naoki Morishita , Motoharu Kitatani , Koichi Kusakabe

We present large-scale density-functional theory (DFT) calculations and temperature programmed desorption measurements to characterize the structural, energetic and vibrational properties of the functionalized molecular switch…

The self-assembly of pyridyl-functionalized triazine (T4PT) was studied on Au(111) using low-temperature scanning tunneling microscopy (STM) under ultra-high vacuum conditions combined with density functional theory (DFT) calculations. In…

Two new photo-switchable terphenylthiazoles molecules are synthesized and self-assembled as monolayers on Au and on ferromagnetic Co electrodes. The electron transport properties probed by conductive atomic force microscopy in ultra-high…

We report equilibrium and non-equilibrium conductance of terphenyl molecules with different anchoring groups including sulfur and nitrogen atom. The corresponding molecules are terphenyl-dithiols(TPDT) and diamino-terphenyl(DATP). The…

材料科学 · 物理学 2015-10-15 Setianto , Th. Niehaus

The formation of ordered phases of dimethyl-disulfide on the Au(111) surface has been investigated by means of Low-Energy Electron Diffraction (LEED), X-ray Photoemission Spectroscopy (XPS), and state-of-the-art Density Functional Theory…

凝聚态物理 · 物理学 2007-05-23 V. De Renzi , D. Marchetto , R. Biagi , U. del Pennino , R. Di Felice , A. Selloni
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