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The contrast obtained in scanning tunneling microscopy (STM) and atomic force microscopy (AFM) images is determined by the tip termination and symmetry. Functionalizing the tip with a single metal atom, CO molecule or organic species has…

Materials Science · Physics 2018-12-05 Margareta Wagner , Martin Setvin , Michael Schmid , Ulrike Diebold

Single chlorophyll-a molecules, a vital resource for the sustenance of life on Earth, have been investigated by using scanning-tunneling-microscope manipulation and spectroscopy on a gold substrate at 4.6 K. The chlorophyll-a binds on…

Soft Condensed Matter · Physics 2009-11-11 Violeta Iancu , Saw-Wai Hla

We report a novel atom extraction mechanism from the native substrate by means of a scanning tunneling microscope tip-crash on a Ag(111) surface at 5 K. Individual atoms are scattered on the surface when a silver coated tip is dipped into…

Materials Science · Physics 2015-06-24 Saw Wai Hla , Kai-Felix Braun , Violeta Iancu , Aparna Deshpande

The point contact of a tunnel tip approaching towards Ag(111) and Cu(111) surfaces is investigated with a low temperature scanning tunneling microscope. A sharp jump-to-contact, random in nature, is observed in the conductance. After point…

Strongly Correlated Electrons · Physics 2016-08-16 L. Limot , J. Kröger , R. Berndt , A. Garcia-Lekue , W. A. Hofer

We investigate atomistic details of a single atom extraction process realized by using scanning tunneling microscope (STM) tip-cluster interaction on a Ag(111) surface at 6 K. Single atoms are extracted from a silver cluster one atom at a…

Materials Science · Physics 2015-06-25 A. Deshpande , H. Yildirim , A. Kara , D. P. Acharya , J. Vaughn , T. S. Rahman , S. -W. Hla

The dynamics of a molecular junction consisting of a PTCDA molecule between the tip of a scanning tunneling microscope and a Ag(111) surface have been investigated experimentally and theoretically. Repeated switching of a PTCDA molecule…

The use of opto-thermal molecular energy storage at the nanoscale creates new opportunities for powering future microdevices with flexible synthetic tailorability. Practical application of these molecular materials, however, requires a…

We report theoretical results predicting the atomic manipulation of a silver atom on a Si(001) surface by a scanning probe tip, and providing insight into the manipulation phenomena. A molecular mechanics technique has been used, the system…

Materials Science · Physics 2009-09-29 Laurent Pizzagalli , Alexis Baratoff

Cesium adsorption structures on Ag(111) were characterized in a low-temperature scanning tunneling microscopy experiment. At low coverages, atomic resolution of individual Cs atoms is occasionally suppressed in regions of an otherwise…

Materials Science · Physics 2009-11-13 M. Ziegler , J. Kroeger , R. Berndt , A. Filinov , M. Bonitz

Silver dimers were fabricated on Ag(111) by single-atom manipulation using the tip of a cryogenic scanning tunnelling microscope. An unoccupied electronic resonance was observed to shift toward the Fermi level with decreasing atom-atom…

Materials Science · Physics 2015-05-13 Alexander Sperl , Joerg Kroeger , Richard Berndt , Andreas Franke , Eckhard Pehlke

We investigate the adsorption of a single tetracyanoethylene (TCNE) molecule on the silver (001) surface. Adsorption structures, electronic properties, and scanning tunneling microscopy (STM) images are calculated within density-functional…

Mesoscale and Nanoscale Physics · Physics 2016-06-22 Thorsten Deilmann , Peter Krüger , Michael Rohlfing , Daniel Wegner

Observing the individual building blocks of matter is one of the primary goals of microscopy. The invention of the scanning tunneling microscope [1] revolutionized experimental surface science in that atomic-scale features on a solid-state…

Materials Science · Physics 2008-08-04 Jannik C. Meyer , C. O. Girit , M. F. Crommie , A. Zettl

Scanning tunneling microscopy using a CO-functionalized tip is combined with simulations to explore the impact of the CO tilt angle on topographies of a single Cu atom and CO molecule adsorbed on Cu(111). Images of the Cu atom acquired with…

Materials Science · Physics 2024-09-24 Ivan Abilio , Nicolas Néel , Jörg Kröger , Krisztián Palotás

In a low-temperature study with a scanning tunneling microscope (STM), the irreducible lateral motion of a CO molecule adsorbed on a Si(001) surface showed a hyperlinear dependence on the tunneling current. This dependence implies that the…

A key step towards building single molecule machines is to control the rotation of molecules and nanostructures step by step on a surface. Here, we used the tunneling electrons coming from the tip of a scanning tunneling microscope to…

Mesoscale and Nanoscale Physics · Physics 2020-05-19 Frank Eisenhut , Jörg Meyer , Justus Krüger , Robin Ohmann , Gianaurelio Cuniberti , Francesca Moresco

In this Letter we suggest a new method of manipulating individual molecules with scanning probes using a "pick-up-and put-down" mode. We demonstrate that the number of molecules picked up by the tip and deposited in a different location can…

Soft Condensed Matter · Physics 2015-06-24 O. Dudko , A. E. Filippov , J. Klafter , M. Urbakh

The tip of a scanning tunnelling microscope can inject hot electrons into a surface with atomic precision. Their subsequent dynamics and eventual decay can result in atomic manipulation of an adsorbed molecule, or in light emission from the…

Chemical Physics · Physics 2019-07-19 Rebecca M. Purkiss , Henry G. Etheridge , Peter A. Sloan , Kristina R. Rusimova

The electronic properties of metal-molecule interfaces can in principle be controlled by molecular design and self-assembly, yielding great potential for future nano- and optoelectronic technologies. However, the coupling between molecular…

Materials Science · Physics 2023-03-29 M. Capsoni , A. Schiffrin , K. A. Cochrane , C. -G. Wang , T. Roussy , A. Q. Shaw , W. Ji , S. A. Burke

The orientation of individual C60 molecules adsorbed on Cu(100) is reversibly switched when the tip of a scanning tunneling microscope is approached to contact the molecule. The probability of switching rises sharply upon displacing the tip…

Materials Science · Physics 2009-11-13 N. Neel , L. Limot , J. Kroeger , R. Berndt

Atoms transferred to W(111) and W(110) tip apices from the Au(111) surface during tunneling and approach to mechanical contact experiments in STM are characterized in FIM at room temperature and at 158 K. The different activation energies…

Materials Science · Physics 2015-06-16 William Paul , David Oliver , Yoichi Miyahara , Peter Grütter
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