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相关论文: Noninvasive Embedding of Single Co Atoms in Ge(111…

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The formation of a novel surface reconstruction upon Co deposition on freshly cleaved Ge(111)2x1 surfaces is studied by means of scanning tunneling microscopy (STM) at low temperature. The deposited Co atoms are immobile at substrate…

材料科学 · 物理学 2015-06-03 D. A. Muzychenko , K. Schouteden , V. I. Panov , C. Van Haesendonck

We have investigated the magnetic Co atoms self-assembled on the ultraflat stanene on Cu(111) substrate by utilizing scanning tunneling microscopy/spectroscopy (STM/STS) in conjunction with density functional theory (DFT). By means of…

材料科学 · 物理学 2022-02-03 Nitin Kumar , Ye-Shun Lan , Chia-Ju Chen , Yen-Hui Lin , Shih-Tang Huang , Horng-Tay Jeng , Pin-Jui Hsu

Chemisorption of CO on the stepped Cu(211) surface is studied within ab-initio density functional theory (DFT) and scanning tunneling microscopy (STM) imaging as well as manipulation experiments. Theoretically we focus on the experimentally…

材料科学 · 物理学 2009-11-10 Marek Gajdos , Andreas Eichler , Jurgen Hafner , Gerhard Meyer , Karl-Heinz Rieder

We investigate Co nanostructures on Bi$_{2}$Se$_{3}$ by means of scanning tunneling microscopy and spectroscopy [STM/STS], X-ray absorption spectroscopy [XAS], X-ray magnetic dichroism [XMCD] and calculations using the density functional…

介观与纳米尺度物理 · 物理学 2016-03-27 T. Eelbo , M. Sikora , G. Bihlmayer , M. Dobrzański , A. Kozłowski , I. Miotkowski , R. Wiesendanger

We characterized CO2 adsorption and diffusion on the missing row reconstructed Cu(100)-O surface using a combination of scanning tunneling microscopy (STM) and density functional theory (DFT) calculations with dispersion. We deposited CO2…

介观与纳米尺度物理 · 物理学 2020-07-14 Steven J. Tjung , Qiang Zhang , Jacob J. Repicky , Simuck F. Yuk , Xiaowa Nie , Nancy M. Santagata , Aravind Asthagiri , Jay A. Gupta

Scanning tunneling microscopy (STM) and spectroscopy (STS) in combination with density functional theory (DFT) calculations are employed to study the surface and subsurface properties of the metastable phase of the phase change material…

We report scanning tunneling microscopy observations of Ge deposited on the Si(111)-7x7 surface for a sequence of sub-monolayer coverages. We demonstrate that Ge atoms replace so-called Si adatoms. Initially, the replacements are random,…

材料科学 · 物理学 2007-05-23 Y. L. Wang , H. -J. Gao , H. M. Guo , Sanwu Wang , Sokrates T. Pantelides

Using density functional theory, we investigate the possible adsorption sites of CO molecules on the recently discovered Pt induced Ge nanowires on Ge(001). Calculated STM images are compared to experimental STM images to identify the…

材料科学 · 物理学 2015-03-13 Danny E. P. Vanpoucke , Geert Brocks

Knowledge of the atomic geometry of a surface is a prerequisite for any detailed understanding of the surface's electronic structure and chemical properties. Previous studies have convincingly demonstrated that density functional theory…

材料科学 · 物理学 2007-05-23 C. Stampfl , M. Scheffler

The adsorption of CO molecules at the Ca3Ru2O7(001) surface was studied using low-temperature scanning tunneling microscopy (STM) and density functional theory (DFT). Ca3Ru2O7 can be easily cleaved along the (001) plane, yielding a smooth,…

We investigate the stability and electronic properties of single Co atoms on graphene with near-exact many-body calculations. A frozen-orbital embedding scheme was combined with auxiliary-field quantum Monte Carlo to increase the reach in…

材料科学 · 物理学 2014-10-27 Yudistira Virgus , Wirawan Purwanto , Henry Krakauer , Shiwei Zhang

Pt deposited on a Ge(001) surface spontaneously forms nanowire arrays. These nanowires are thermodynamically stable and can be hundreds of atoms long. The nanowires only occur on a reconstructed Pt-Ge-surface where they fill the troughs…

材料科学 · 物理学 2013-11-15 Danny E. P. Vanpoucke , Geert Brocks

The surface atomic and electronic structure after deposition of 1/3 monolayer (ML) Te on Cu(111) was determined using a combination of low-energy electron diffraction (LEED), scanning tunneling microscopy and spectroscopy (STM/STS),…

Understanding how the local environment of a single-atom catalyst affects stability and reactivity remains a significant challenge. We present an in-depth study of Cu1, Ag1, Au1, Ni1, Pd1, Pt1, Rh1, and Ir1 species on Fe3O4(001); a model…

We describe a first principles method to calculate scanning tunneling microscopy (STM) images, and compare the results to well-characterized experiments combining STM with atomic force microscopy (AFM). The theory is based on density…

介观与纳米尺度物理 · 物理学 2018-09-14 Alexander Gustafsson , Norio Okabayashi , Angelo Peronio , Franz J. Giessibl , Magnus Paulsson

Co single atom junctions on copper surfaces are studied by scanning tunneling microscopy and ab-initio calculations. The Kondo temperature of single cobalt atoms on the Cu(111) surface has been measured at various tip-sample distances…

Using first-principles calculations, we systematically study the adsorption behaviors of molecular CO on the Be (0001) surface. By calculating the potential energy surfaces, we find that CO molecularly adsorbs on the Be surface with small…

材料科学 · 物理学 2015-05-13 Shuang-Xi Wang , Yu Yang , Bo Sun , Rong-Wu Li , Shao-Jun Liu , Ping Zhang

We present an in-depth analysis of the atomic and electronic structure of the quasi one-dimensional (1D) surface reconstruction of Ga on Si(112) based on Scanning Tunneling Microscopy and Spectroscopy (STM and STS), Rutherford…

其他凝聚态物理 · 物理学 2007-05-23 P. C. Snijders , C. Gonzalez , S. Rogge , R. Perez , J. Ortega , F. Flores , H. H. Weitering

Combining classical electrodynamics and density functional theory (DFT) calculations, we develop a general and rigorous theoretical framework that describes the energetics of metal surfaces under high electric fields. We show that the…

材料科学 · 物理学 2019-05-22 Andreas Kyritsakis , Ekaterina Baibuz , Ville Jansson , Flyura Djurabekova

CO adsorption on Cu(111) and Cu(001) surfaces has been studied within ab-initio density functional theory (DFT). The structural, vibrational and thermodynamic properties of the adsorbate-substrate complex have been calculated. Calculations…

材料科学 · 物理学 2009-11-10 M. Gajdos , J. Hafner
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