Details
Originalsprache | Englisch |
---|---|
Aufsatznummer | 063120 |
Fachzeitschrift | Applied Physics Letters |
Jahrgang | 89 |
Ausgabenummer | 6 |
Publikationsstatus | Veröffentlicht - 10 Aug. 2006 |
Abstract
The fabrication and characterization of metallic nanometer-sized gaps suitable for conductivity measurements of single molecules were studied. Controlled gap formation by electromigration (EM) is demonstrated in contiguous and ultrathin Ag structures wetting the Si(100) substrate. The gaps obtained are in the range of nanometers or even subnanometers, as revealed by lateral conductivity measurements and scanning tunneling microscopy carried out under ultrahigh vacuum conditions. Annealing to 300 K closes the gap by enabling surface diffusion of Ag, and another cycle of opening by EM at 80 K can be performed. The functionality of the contacts is demonstrated by insertion of ferrocenedithiol molecules into the gap.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Physik und Astronomie (sonstige)
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in: Applied Physics Letters, Jahrgang 89, Nr. 6, 063120, 10.08.2006.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Switchable nanometer contacts
T2 - Ultrathin Ag nanostructures on Si(100)
AU - Gardinowski, Gernot
AU - Schmeidel, Jedrzej
AU - Pfnür, Herbert
AU - Block, Thomas
AU - Tegenkamp, Christoph
N1 - Funding information: The authors greatfully acknowledge the financial support by the VolkswagenStiftung (I/79 310).
PY - 2006/8/10
Y1 - 2006/8/10
N2 - The fabrication and characterization of metallic nanometer-sized gaps suitable for conductivity measurements of single molecules were studied. Controlled gap formation by electromigration (EM) is demonstrated in contiguous and ultrathin Ag structures wetting the Si(100) substrate. The gaps obtained are in the range of nanometers or even subnanometers, as revealed by lateral conductivity measurements and scanning tunneling microscopy carried out under ultrahigh vacuum conditions. Annealing to 300 K closes the gap by enabling surface diffusion of Ag, and another cycle of opening by EM at 80 K can be performed. The functionality of the contacts is demonstrated by insertion of ferrocenedithiol molecules into the gap.
AB - The fabrication and characterization of metallic nanometer-sized gaps suitable for conductivity measurements of single molecules were studied. Controlled gap formation by electromigration (EM) is demonstrated in contiguous and ultrathin Ag structures wetting the Si(100) substrate. The gaps obtained are in the range of nanometers or even subnanometers, as revealed by lateral conductivity measurements and scanning tunneling microscopy carried out under ultrahigh vacuum conditions. Annealing to 300 K closes the gap by enabling surface diffusion of Ag, and another cycle of opening by EM at 80 K can be performed. The functionality of the contacts is demonstrated by insertion of ferrocenedithiol molecules into the gap.
UR - http://www.scopus.com/inward/record.url?scp=33747201720&partnerID=8YFLogxK
U2 - 10.1063/1.2336650
DO - 10.1063/1.2336650
M3 - Article
AN - SCOPUS:33747201720
VL - 89
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 6
M1 - 063120
ER -