Accessing the quantum world through electronic transport in carbon nanotubes

Gräber, Matthias Rudolf. Accessing the quantum world through electronic transport in carbon nanotubes. 2006, Doctoral Thesis, University of Basel, Faculty of Science.


Official URL: http://edoc.unibas.ch/diss/DissB_7560

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In this thesis we will focus on
(a) superconducting electrodes attached to carbon nanotube quantum dots in
order to study the effects of superconducting correlations on quantum systems
(b) local gate control of carbon nanotubes in order to define and control double
quantum dot systems in carbon nanotubes. As it turns out, local gates are
an important tool for increasing the control over quantum states in nanotubes.
The thesis is structured as follows:
• Chapter 1 gives a brief introduction to the chemical and electronic properties
of carbon nanotubes and the experimental procedures necessary for
manufacturing electrical devices with single carbon nanotubes.
• In Chapter 2 selected topics of charge transport in mesoscopic systems,
such as single and coupled quantum dots, are reviewed.
• In Chapter 3 we present electrical transport measurements through a carbon
nanotube coupled to a normal and a superconducting lead - a test
system for the exploration of the nature of many-particle correlations.
• Chapter 4 describes how to achieve local gate control over semiconducting
carbon nanotubes by adding top-gate electrodes.
• In Chapter 5 double quantum dots are defined and controlled inside a
carbon nanotube. The system allows for the observation of molecular
states induced by a large tunnel coupling of the dots; an artificial molecule
is defined inside a real one.
Advisors:Schönenberger, Christian
Committee Members:Kotthaus, Jörg P. and Belzig, Wolfgang
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Schönenberger, Christian
Item Type:Thesis
Thesis Subtype:Doctoral Thesis
Thesis no:7560
Thesis status:Complete
Number of Pages:100
Identification Number:
edoc DOI:
Last Modified:22 Apr 2018 04:30
Deposited On:13 Feb 2009 15:39

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