Berlin 2018 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 64: Focus Session: Molecular Nanostructures on surfaces - New Concepts towards Complex Architectures IV

O 64.10: Vortrag

Mittwoch, 14. März 2018, 17:30–17:45, MA 004

Single molecule manipulation via inelastic electron tunneling — •Gitika Srivastava¹, Tibor Kudernac², Manfred Parschau¹, Peter Stacko³, Bernard L. Feringa³, and Karl-Heinz Ernst^1,4 — ¹Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland — ²University of Twente, The Netherlands — ³Univeristy of Groningen, The Netherlands — ⁴University of Zürich, Switzerland

Maneuvering individual molecules over a clean and unmodified surface is challenging, yet possible using surface sensitive techniques like Scanning Tunneling Microscopy (STM). Electronic and vibrational excitation by means of inelastic electron tunneling from the tip of STM has been observed to have brought out subsequent dynamical processes on surfaces. We investigate the influence of inelastic electron tunneling on molecules with two functional unidirectional rotor units, comparable to the previously reported 4-wheeler as nano-car and have observed molecular motions like hopping and conformational changes. Results of single molecular dynamics of these molecules at low temperatures (6K) on Cu(111) surface are presented and discussed.