Project

Back to overview

Electric Transport Phenomena in Mesoscopic Devices

English title Electric Transport Phenomena in Mesoscopic Devices
Applicant Schönenberger Christian
Number 116621
Funding scheme Project funding (Div. I-III)
Research institution Departement Physik Universität Basel
Institution of higher education University of Basel - BS
Main discipline Condensed Matter Physics
Start/End 01.04.2007 - 31.03.2009
Approved amount 541'622.00
Show all

Keywords (12)

Mesoscopic Physics; Electronic Properties of Nanostructures; charge and spin transport in nanostructures; Physics in reduced dimensions; Fluctuation Phenomena (Shot Noise); Quantum transport; nanoelectronics; spintronics; quantum electronics; carbon nanotubes; semiconducting nanowires; graphene

Lay Summary (English)

Lead
Lay summary
The ever growing interest in low dimensional systems, such as one-dimensional wires and zero-dimensional quantum dots is due to the unique transport properties of charge and spin currents in these systems. Over the last years, we have been very successful in using new model systems such as carbon nanotubes to explore novel physics in reduced dimensions. We will continue with this philosophy, but will shape our focus much more strongly on spin-related phenomena in transport, including fluctuation correlation experiments.

Our objectives fall into two categories: a) fundamental transport phenomena in low-dimensional conductors using carbon nanotubes (CNTs), semiconducting nanowires and possibly also graphene layers as interacting model systems; and b), fluctuation correlation experiments in multi-terminal structures fabricated into two-dimensional electron gases (2DEGs) using semiconductor heterostructures. In a), our focus is on spin-transport with a particular emphasis on the zero-dimensional quantum-dot regime. To do so, two and multi-terminal carbon- or InAs-based hybrid devices will be fabricated. As contact material, these hybrid devices may use normal metals, ferromagnets and superconductors. In b) we will study correlation effects in multi-terminal (i.e. more than two terminals) devices induced by (i) the Pauli principle, (ii) interaction and relaxation effects (quantum-classical-crossover) and (iii) Cooper-pairing from superconductors. In particular the latter has recently received renewed attention in linear transport under the term ‘Crossed Andreev Reflection’ and asks for noise studies. Here, we will base our studies on InAs 2DEGs and nanowires with a superconducting source contact.

Information on the group can be found under: http:\\www.unibas.ch\phys-meso
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Associated projects

Number Title Start Funding scheme
124670 Electric Transport Phenomena in Mesoscopic Devices 01.04.2009 Project funding (Div. I-III)
134619 Electric Transport Phenomena in Nanoscaled Devices 01.04.2011 Project funding (Div. I-III)
107543 Electric Transport Phenomena in Mesoscopic Devices 01.04.2005 Project funding (Div. I-III)

-