Prev. Article Next Article Table of Contents

Communication

Measuring the Charge State of Point Defects on MgO/Ag(001)

Supporting Info

T. K

nig^†, G. H. Simon^†, H.-P. Rust^†, G. Pacchioni^‡, M. Heyde*^† and H.-J. Freund^†

Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, and Dipartimento di Scienza dei Materiali, Universit

di Milano-Bicocca, via R. Cozzi, 53-20125 Milano, Italy

J. Am. Chem. Soc., 2009, 131 (48), pp 17544–17545

DOI: 10.1021/ja908049n

Publication Date (Web): November 12, 2009

heyde@fhi-berlin.mpg.de, †

Fritz-Haber-Institut der Max-Planck-Gesellschaft.

, ‡

Universit di Milano-Bicocca.

Abstract

A detailed understanding of surface defects is highly desirable, e.g. to clarify their role as active sites in catalysis. Here localized defects on the surface of MgO films deposited on Ag(001) are investigated. Since the electronic structure of color centers depends on their local position, spectroscopic signals are highly convoluted and often difficult to disentangle. In this study we aimed to obtain morphological and spectroscopic information on single color centers at a microscopic level with frequency modulated dynamic force microscopy (FM-DFM) and scanning tunneling microscopy (STM) in an ultrahigh vacuum and at low temperature. Four of the major and in literature mostly discussed defect types on MgO have been characterized by their charge state and finally identified by the complementary application of FM-DFM and STM in combination with density functional theory results.

View: Full Text HTML | Hi-Res PDF | PDF w/ Links

Tools

SciFinder Links

Explore by:

Author of this Article Any Author Research Topic

History

Published In Issue December 09, 2009
Article ASAPNovember 12, 2009
Received: September 30, 2009

Recommend & Share

Related Content

CH Stretching Excitation Steers the F Atom to the CD Bond in the F + CHD₃ ReactionJournal of the American Chemical Society
- CH Stretching Excitation Steers the F Atom to the CD Bond in the F + CHD₃ Reaction
  Gbor Czak and Joel M. Bowman
  Journal of the American Chemical Society 2009 131 (48), pp 17534–17535
  Abstract: Quasiclassical trajectories on an ab initio potential energy surface show that a stereodynamical effect steers the F atom away from the stretching-excited CH bond, thereby promoting the DF + CHD₂ product channel of the F + CHD₃(ν₁ = 1) reaction at low ...
  Abstract | Full Text HTML | PDF w/ Links | Hi-Res PDF
Highly Stereoselective Proton/Hydride Exchange: Assistance of Hydrogen Bonding for the Heterolytic Splitting of H₂Journal of the American Chemical Society
- Highly Stereoselective Proton/Hydride Exchange: Assistance of Hydrogen Bonding for the Heterolytic Splitting of H₂
  Anja Friedrich, Markus Drees, Jrn Schmedt auf der Gnne and Sven Schneider
  Journal of the American Chemical Society 2009 131 (48), pp 17552–17553
  Abstract: The dihydrido amine complex [Ru(H)₂PMe₃{HN(CH₂CH₂PⁱPr₂)₂}] and H₂O exhibit highly unusual, stereoselective H⁺/H⁻ exchange, as derived using ¹H 2D EXSY NMR spectroscopy. While H^RuA rapidly exchanges with H₂O [k = 337(20) L mol⁻¹ s⁻¹], no direct H^RuB/H₂O ...
  Abstract | Full Text HTML | PDF w/ Links | Hi-Res PDF
Gigantic Enhancement in Sensitivity Using Schottky Contacted Nanowire NanosensorJournal of the American Chemical Society
- Gigantic Enhancement in Sensitivity Using Schottky Contacted Nanowire Nanosensor
  Te-Yu Wei, Ping-Hung Yeh, Shih-Yuan Lu and Zhong Lin Wang
  Journal of the American Chemical Society 2009 131 (48), pp 17690–17695
  Abstract: A new single nanowire based nanosensor is demonstrated for illustrating its ultrahigh sensitivity for gas sensing. The device is composed of a single ZnO nanowire mounted on Pt electrodes with one end in Ohmic contact and the other end in Schottky ...
  Abstract | Full Text HTML | PDF w/ Links | Hi-Res PDF

Communication

Measuring the Charge State of Point Defects on MgO/Ag(001)