Projekt

Temperature effect on electronic quantum transmission in novel nanostructured materials

Udbyder

Vejleder

Sted

København og omegn

Overview

Nanoporous graphene (NPG) has recently attracted much attention because it represents a way to engineer quantum interference in graphene and was recently synthesized. The material is best described as a series of graphene nanoribbons where small molecular groups act as structurally binding, but electrically insulating bridges between the ribbons. By choosing the molecular group that acts as a bridge carefully, electrical contact between the bridges can be enhanced, allowing for quantum interference. These properties make NPGs appealing for nanocircuitry.


However previous calculations for NPG don’t include phonon scattering. Since phonon scattering can strongly impact currents on the atomic scale, it is possible that thermal effects are important to the cross-ribbon interactions.

Aim

The aim of this proposal is that we predict the effect of temperature and phonon scattering on the quantum interference effects in nanoporous graphene. We may introduce different molecular bridges or disorder and based on those findings propose a structure where the quantum interference effect is more resilient to temperature.

Content

Computer simulations using density functional theory (DFT) software. Phonon calculations. Quantum transport using non-equilibrium Greens functions. Programming in Python.


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

Jonas Lundholm Bertelsen

ECTS-point

5 - 30

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

10303

Kandidatuddannelsen i Fysik og Nanoteknologi

Vejleder

Mads Brandbyge

Medvejledere

Jonas Lundholm Bertelsen

ECTS-point

5 - 30

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

10303

OM DTU

DTU er et teknisk eliteuniversitet med international rækkevidde og standard. Vores mission er at udvikle og nyttiggøre naturvidenskab og teknisk videnskab til gavn for samfundet. 10.000 studerende uddanner sig her til fremtiden, og 5.700 medarbejdere har hver dag fokus på uddannelse, forskning, myndighedsrådgivning og innovation, som bidrager til øget vækst og velfærd.

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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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