Projekt

Current-driven molecular dynamics of atomic junctions

Udbyder

Vejleder

Sted

København og omegn

Using mechanical break junction techniques, it is possible to reduce metal wires to a few atom thickness and fabricate atomic-scale contacts. As has been demonstrated recently, these contacts can operate as reliable two-terminal switches toggled by the applied bias voltage and the resulting electrical current. It was found that the switching process is caused by the reversible rearrangement of single atoms, resulting from current-induced forces.

However, the interplay between the atomic structural rearrangement and the current due to the applied bias voltage is not fully understand yet.

The aim of this project is to perform molecular dynamics simulations of atomic size metal junctions, including current-induced forces. We want to predict the effect of high current densities on the atomic structure and thus the stability of different nanojunctions, and, in particular, understand the switching behavior observed in the experiments.

Forudsætninger

Student should know solid state physics (eg course 10303). Student should be at least superficially experienced with Python. We recommend (but dont require) eg. course 10325.

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Kontakt

Virksomhed/organisation

DTU Fysik

Navn

Mads Brandbyge

Stilling

Professor

Mail

mabr@dtu.dk

Vejleder-info

Bachelor i Fysik og Nanoteknologi

Vejleder

Mads Brandbyge

Medvejledere

Susanne Leitherer

ECTS-point

5 - 30

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

10303

Kandidatuddannelsen i Fysik og Nanoteknologi

Vejleder

Mads Brandbyge

Medvejledere

Susanne Leitherer

ECTS-point

5 - 30

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

10303

OM DTU

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Anker Engelunds Vej 1
Bygning 101A
2800 Kgs. Lyngby


45 25 25 25

dtu@dtu.dk

CVR-nr. 30 06 09 46

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