Journal Article

FZJ-2019-01238

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Intuitive human interface to a scanning tunnelling microscope: observation of parity oscillations for a single atomic chain

Tewari, S. ; Bakermans, J. ; Wagner, C.FZJ* ; Galli, F. ; van Ruitenbeek, J. M. (Corresponding author)

2019
Beilstein-Institut zur Förderung der Chemischen Wissenschaften Frankfurt, M.

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Please use a persistent id in citations: http://hdl.handle.net/2128/21542  doi:10.3762/bjnano.10.33

Abstract: A new way to control individual molecules and monoatomic chains is devised by preparing a human–machine augmented system inwhich the operator and the machine are connected by a real-time simulation. Here, a 3D motion control system is integrated with anultra-high vacuum (UHV) low-temperature scanning tunnelling microscope (STM). Moreover, we coupled a real-time moleculardynamics (MD) simulation to the motion control system that provides a continuous visual feedback to the operator during atomicmanipulation. This allows the operator to become a part of the experiment and to make any adaptable tip trajectory that could beuseful for atomic manipulation in three dimensions. The strength of this system is demonstrated by preparing and lifting a monoatomicchain of gold atoms from a Au(111) surface in a well-controlled manner. We have demonstrated the existence ofFabry–Pérot-type electronic oscillations in such a monoatomic chain of gold atoms and determined its phase, which was difficult toascertain previously. We also show here a new geometric procedure to infer the adatom positions and therefore information aboutthe substrate atoms, which are not easily visible on clean metallic surfaces such as gold. This method enables a new controlled atommanipulation technique, which we will refer to as point contact pushing (PCP) technique.

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Contributing Institute(s):

1. Funktionale Nanostrukturen an Oberflächen (PGI-3)

Research Program(s):

1. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)

Appears in the scientific report 2019

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF < 5 ; JCR ; PubMed Central ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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