| Working Group 2.53 |
|
Low dimensional Electron Systems
|
|
|
|
|
|
Tasks
Research on low dimensional electronic systems with regard to their use as a quantum standards for the realisation of the electrical units, in particular
Fabrication of two-dimensional systems based on Gallium Arsenide with Molecular Beam Epitaxy (MBE)
Fabrication of one- and zero-dimensional devices using e-beam lithography, self assembly phenomena, or by contacting carbon nanotubes.
Research into electrical transport in low dimensional systems at temperatures down to 15 mK and in magnetic fields up to 20 T
Investigation of single electron tunnelling through self assembled quantum dots.
Equipment
Molecular Beam Epitaxy - MBE 1
|
|
|
Molecular Beam Epitaxy - MBE 2
|
|
|
Top loading dilution refrigerator and magnet
(25 mK, 17 Tesla)
|
|
|
He3 cryo magnetagnet
(0,3 K, 16 T)
|
|
|
Setup for photoluminescence (PL) and photoluminescence excitation spectroscopy
(PLE)
|
|
|
|
Setups for material characterization
- "van-der-Pauw" measurements
- Capacitance-Voltage measurements
|
|
|
External cooperations:
We have various running collaborations with external partners in the different fields of work of the group. Some are listed below:
- University of Hannover
- University of Bielefeld
- Max Planck Institute for Solid State Research, Stuttgart
- University of Cambridge
- National Physical Laboratory, London
- University Regensburg
|
Contact
| Head of Working Group |
|
Dr. Hans Werner Schumacher
Tel.: +49 531 592-2414
Fax: +49 531 592-2205
E-Mail: Hans.W.Schumacher |
|
|
|
| Address |
|
Physikalisch-Technische Bundesanstalt
Working Group 2.53
Bundesallee 100
38116 Braunschweig
Germany
|
© Physikalisch-Technische Bundesanstalt
Page created: 15/04/06, last update: 24/08/2009 Ch.Becker |
|
