NANOCONTACTS

Structural and electronic properties of nanoscale metallic contacts fabricated by thermally assisted electromigration

Coordinatore	Karlsruher Institut fuer Technologie    more Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.
Nazionalità Coordinatore	Germany [DE]
Totale costo	1˙513˙000 €
EC contributo	1˙513˙000 €
Programma	FP7-IDEAS-ERC Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	ERC-2009-StG
Funding Scheme	ERC-SG
Anno di inizio	2010
Periodo (anno-mese-giorno)	2010-01-01   -   2015-12-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	Karlsruher Institut fuer Technologie  Organization address address: Kaiserstrasse 12 city: Karlsruhe postcode: 76131 contact info Titolo: Dr. Nome: Regina Cognome: Hoffmann-Vogel Email: send email Telefono: +49 721 60843515 Fax: +49 721 60846103	DE (Karlsruhe)	hostInstitution	1˙513˙000.00
2	Karlsruher Institut fuer Technologie  Organization address address: Kaiserstrasse 12 city: Karlsruhe postcode: 76131 contact info Titolo: Ms. Nome: Steffi Cognome: Baatz Email: send email Telefono: 4972160000000 Fax: 4972160000000	DE (Karlsruhe)	hostInstitution	1˙513˙000.00

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 Obiettivo del progetto (Objective)

'The key aim of the project is to correlate the electronic transport properties of nanoscale metallic contacts with their structure. The electronic transport properties through a metallic contact of atomic dimensions are governed by the atomic structure and by the chemical properties of the contact as well as by the wave nature of electrons. This leads to plateaus of the conductance measured as a function of contact size that do not necessarily correspond to integer multiples of the conductance quantum. I will investigate whether and how atomic as well as electronic shell effects influence the atomic structure of nanoscale metallic contacts. We will measure both electronic transport properties and structural properties concurrently and determine their mutual relation on each individual contact. The contacts will be fabricated by Joule heating a nanowire until thermally assisted electromigration sets in and thins the nanowire to form a contact. The structural properties of these nanocontacts will be studied using scanning force microscopy and scanning tunneling microscopy with atomic resolution in ultrahigh-vacuum. This approach will allow us to use clean superconducting contacts and to exploit superconductivity in order to study the electronic transport properties of the contacts. The electronic transport properties will be studied employing multiple Andreev reflections to determine the number and transmission coefficient of electronic conduction channels. Eventually, a deeper understanding of the relation between structure and electronic transport properties will be obtained which is a prerequisite to tailor the electronic transport properties of nanoscale metallic contacts.'