Matches in SemOpenAlex for { <https://semopenalex.org/work/W2134717797> ?p ?o ?g. }
- W2134717797 abstract "An interactive scanning tunneling microscopy (STM) simulator has been designed to efficiently compute the effects of chemical and structural modifications of adsorbed species on resulting STM images. Our general approach is based on first-order perturbation theory that takes into account different tip geometries. In our intrusive STM imaging strategy, we consider small variations such as substitutions, vacancies, functionalizations, and molecular reorganizations from a reference system. First, we show that our perturbation theory approach can provide STM images that are qualitatively similar to those of a more rigorous electron scattering technique based on the Landauer-Buttiker formalism for the case of adsorbed tetracyanoethylene on a Cu(100) single crystal. Second, we demonstrate that the efficiency of Bardeen and Tersoff-Hamann approaches to generate STM images can be substantially improved by exploiting different algorithms to evaluate the tunnel current and to deal with large-scale eigenvalue problems. Following our general intrusive strategy, we have reduced the computing time to generate an STM image of a modified system by about an order of magnitude with respect to the reference image. The shape and position of the contrasts of the STM image evaluated in the context of intrusion are virtually identical to an image computed without intrusive features but within a considerably smaller computing time." @default.
- W2134717797 created "2016-06-24" @default.
- W2134717797 creator A5037330846 @default.
- W2134717797 creator A5062867996 @default.
- W2134717797 date "2011-03-15" @default.
- W2134717797 modified "2023-09-25" @default.
- W2134717797 title "Intrusive STM imaging" @default.
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- W2134717797 doi "https://doi.org/10.1103/physrevb.83.115430" @default.
- W2134717797 hasPublicationYear "2011" @default.