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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Wednesday, 06 June 2007
(at 12:30 in room Phy 8.1.09)
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Journal-Club
Controlled contact to a C60 molecule

Jascha Repp

Institut für Experimentelle und Angewandte Physik
Universität Regensburg
   






(From doi: 10.1103/PhysRevLett.98.065502): The tip of a low-temperature scanning tunneling microscope is approached towards a C60 molecule adsorbed at a pentagon-hexagon bond on Cu(100) to form a tip-molecule contact. The conductance rapidly increases to [approximate]0.25 conductance quanta in the transition region from tunneling to contact. Ab-initio calculations within density functional theory and nonequilibrium Green's function techniques explain the experimental data in terms of the conductance of an essentially undeformed C60. The conductance in the transition region is affected by structural fluctuations which modulate the tip-molecule distance.




related paper (html)

Invited by G. Cuniberti, C. Strunk (JClub)

Within the Journal Club 52 315

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