Web page Frank Hohls

Institut für Festkörperphysik, Abteilung Nanostrukturen

Dr. Frank Hohls
e-mail hohls@nano.uni-hannover.de

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Lectures

Electronics (2002/03 and 2003/04)
stand in for Prof. Haug (e.g. Physics I and Nanoelectronics)

Research interests

localization and scaling in the quantum Hall regime
phonon spectroscopy in fractional quantum Hall systems
dynamical excitation of low dimensional systems
quantum point contact
noise measurements in quantum dot systems
ballistic electron spectroscopy

Experimental skills

low temperature experiments (dilution fridge etc.)
small signal electronic transport measurements
high frequency (~GHz) and transient (~ps) transport experiments

Publications

publication highlights:
- F. Hohls, M. Pepper, J. P. Griffiths, G. A. C. Jones & D. A. Ritchie:
  Ballistic electron spectroscopy
  Applied Physics Letters, v. 89, p. 212103 (2006).
  [doi:10.1063/1.2393168] [pdf]
- C. Fricke, M. C. Rogge, B. Harke, M. Reinwald, W. Wegscheider, F. Hohls & R. J. Haug:
  Noninvasive detection of charge rearrangement in a quantum dot in high magnetic fields
  Physical Review B, v. 72, p. 193302 (2005).
  [doi:10.1103/PhysRevB.72.193302] [url] [pdf]
- A. Nauen, F. Hohls, N. Maire, K. Pierz & R. J. Haug:
  Shot noise in tunneling through a single quantum dot
  Physical Review B, v. 70, p. 033305 (2004).
  [doi:10.1103/PhysRevB.70.033305] [url] [pdf]
- F. Schulze-Wischeler, E. Mariani, F. Hohls & R. J. Haug:
  Direct measurement of the g factor of composite fermions
  Physical Review Letters, v. 92, p. 156401 (2004).
  [doi:10.1103/PhysRevLett.92.156401] [url] [pdf]
- G. Sukhodub, F. Hohls & R. J. Haug:
  Observation of an interedge magnetoplasmon mode in a degenerate two-dimensional electron gas
  Physical Review Letters, v. 93, p. 196801 (2004).
  [doi:10.1103/PhysRevLett.93.196801] [url] [pdf]
- F. Hohls & R.J. Haug:
  Scaling of the Quantum Hall Plateau Transition
  Advances in Solid State Physics v. 43, p. 193 (2003).
  [doi:10.1007/b12017] [pdf]
- F. Hohls, U. Zeitler & R. J. Haug:
  Hopping conductivity in the quantum Hall effect: Revival of universal scaling
  Physical Review Letters, v. 88, p. 036802 (2002).
  [doi:10.1103/PhysRevLett.88.036802] [url] [pdf]
- A. Nauen, I. Hapke-Wurst, F. Hohls, U. Zeitler, R. J. Haug & K. Pierz:
  Shot noise in self-assembled InAs quantum dots
  Physical Review B, v. 66, p. 161303R (2002).
  [doi:10.1103/PhysRevB.66.161303] [url] [pdf]
- F. Hohls, U. Zeitler & R. J. Haug:
  High frequency conductivity in the quantum Hall regime
  Physical Review Letters, v. 86, p. 5124 (2001).
  [doi:10.1103/PhysRevLett.86.5124] [url] [pdf]
full publication list
phd-thesis: Plateau transition in the quantum Hall effect: Experiments on temperature and frequency dependence
[abstract] [pdf,german]
diploma-thesis: Radiation pressure in laser interferometers [pdf,german]

Scientific Vita

since 09/2006	Senior scientist in the Nanostructure Group at the Institute for solid state physics, University of Hannover
06/2004 – 08/2006	Semiconductor Physics Group (Head: Prof. Pepper) Cavendish Laboratory, University of Cambridge
07/2000 – 05/2004	Research associate, Institute for solid state physics, University of Hannover
06/1996 – 05/2004	Member of the Nanostructure Group at the Institute for solid state physics, University of Hannover
06/2000	Dr. rer. nat. (Ph.D.) in physics, University of Hannover
04/1996 – 06/2000	Thesis work with Prof. Haug Title: Plateau transition in the quantum Hall effect
03/1996	Diplom (M.Sc.) in physics, University of Hannover
12/1994 – 12/1995	Thethis work in optics supervised by Prof. Danzmann at the Institute for atomic and molecular physics, University of Hannover Title: Radiation pressure in laser interferometers
10/1993 – 03/1996	Scholarship of the Studienstiftung des deutschen Volkes (German National Academic Foundation)
10/1992	Diplomvorprüfung (B. Sc.) in physics, University of Hannover

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