Physikalisch-Technische Bundesanstalt

Overview

Research on low-dimensional electronic systems with regard to their use as a quantum standards for the realisation of the electrical units, in particular

• Investigations of GHz single-charge transport in semiconductor nanostructures; This project is undertaken within the "European Metrology Research Programme". Project title: "Quantum ampere: Realisation of the new SI ampere"
  
  
  
• Fabrication and optimization of quantum Hall devices, including serial and parallel circuits, for the realization of the unit of electrical resistance in the DC and AC regime
  
• Development of carbon based single-electron devices
  Leading the project "Single electron pumping in graphene based nanostructures" within the Priority Programme SPP 1459 "Graphene"
  
  Contact: Bernd Kästner
  
• Fabrication of other low-dimensional systems using electron-beam lithography and molecular beam epitaxy (MBE), including self-assembled quantum dots

Selected publications

Semiconductor quantized voltage source
Frank Hohls, Armin C. Welker, Christoph Leicht, Lukas Fricke, Bernd Kaestner, Philipp Mirovsky, Andre Müller, Klaus Pierz, Uwe Siegner and  Hans Werner Schumacher
Phys. Rev. Lett. 109, 056802 (2012)

The quantum Hall impedance standard
J. Schurr, J. Kucera, K. Pierz and B. Kibble
Metrologia 48, 47 (2011)

A molecular quantized charge pump
Viktor Siegle, Chen-Wei Liang, Bernd Kästner et al.
Nano Lett. 10, 3841 (2010)

Universal decay cascade model for dynamic quantum dot initialization
Vyacheslavs Kashcheyevs and Bernd Kästner
Phys. Rev. Lett. 104, 186805 (2010)

Gigahertz quantized charge pumping
Mark D. Blumenthal, Bernd Kästner, Ling Li et al.
Nature Physics 3, 343 (2007)
 

Kontakt/Contact

Arbeitsgruppenleiter/ Groupleader		RR PD Dr. Frank Hohls Tel.: +49 531 592-2410 Fax: +49 531 592-692410 Meissner-Bau 317
Mitarbeiter/Members		TRAR Dipl. Ing. Ulrich Becker
		Tel.: +49 531 592-2413 Fax: +49 531 592-692413 Meissner-Bau 320 Dipl. Phys. Lukas Fricke Tel.: +49 531 592-2478 Fax: +49 531 592-692478 Meissner-Bau 335 TROS Birgit Hacke Tel.: +49 531 592-2442 Fax: +49 531 592-692442 Meissner-Bau 323 ORR Dr. Bernd Kästner        Tel.: +49 531 592-2245 Fax: +49 531 592-692245 Meissner-Bau 321 Dipl. Ing. Christoph Leicht  Tel.: +49 531 592-2258 Fax: +49 531 592-692258 Meissner-Bau 322 Holger Marx Tel.: +49 531 592-2442 Fax: +49 531 592-692442 Meissner-Bau 323 Dipl. Mus. MaSt Friederike Matthaei Tel.: +49 531 592-2533 Fax: +49 531 592-692533 Meissner-Bau 318 Dipl. Phys. Philipp Mirovsky Tel.: +49 531 592-2443 Fax: +49 531 592-692443 Meissner-Bau 318 Dipl. Ing. Andre Müller Tel.: +49 531 592-2531 Fax: +49 531 592-692531 Meissner-Bau 322 ORR Dr. Klaus Pierz Tel.: +49 531 592-2412 Fax: +49 531 592-692412 Meissner-Bau 319 Michael Wulf Tel.: +49 531 592-2402 Fax: +49 531 592-692402 Meissner-Bau 317
Addresse		Physikalisch-Technische Bundesanstalt Working Group 2.53 Bundesallee 100 38116 Braunschweig Germany