Welcome to the Brandt group (E25)

Our research addresses new semiconductor materials and new spectroscopic methods for their characterization. For quantum information processing, we develop new tools based on magnetic resonance which allow to manipulate and detect the spin state of quantum bits via electrical transport measurements. These techniques also allow the sensitive analysis of defects in semiconductor devices such as solar cells. On the materials’ side, we study the properties of nanocrystals, focusing on fundamental issues concerning their doping and the use of thin films composed of nanocrystals for photovoltaic and thermoelectric energy conversion. Furthermore, we investigate the ferromagnetism in Mn-doped semiconductors, exploring possibilities to manipulate their magnetic properties by incorporation of hydrogen or the application of mechanical stress. Finally, the effects of chemical treatments on semiconductor surfaces are studied in the context of photovoltaics, where a new method to suppress reflection losses in solar cells is developed, and with respect to biosensors, where the functionalization of Si and SiC is investigated.

Have a look at the pages describing this research in more detail. There, you will also find links to recent scientific publications. If you have more questions or would like to join us as a summer, Diploma or PhD student or a as post doc, please contact Martin Brandt.

TUM Technische Universität München TUM Technische Universität München Physik Department Elektrotechnik und Informationstechnik TUM Technische Universität München
 

Recent publications

 

Spin-Dependent Recombination between Phosphorus Donors in Silicon and Si/SiO2 Interface States Investigated with Pulsed Electrically Detected Electron Double Resonance

Phys. Rev. Lett. 104, 046402 (2010)

F. Hoehne | H. Huebl |  | B. Galler | M. Stutzmann | M. S. Brandt |

Online Reference

Observation of an electrically tunable exciton g factor in InGaAs/GaAs quantum dot

Appl. Phys. Lett. 96, 053113 (2010)

F. Klotz | V. Jovanov | J. Kierig | E. Clark | D. Rudolph | D. Heiss | M. Bichler | G. Abstreiter | M. S. Brandt | J. Finley

Online Reference

Electron paramagnetic resonance of boron acceptors in isotopically purified silicon

Phys. Rev. B 81, 161203(R) (2010)

H. Tezuka | A. R. Stegner | A. M. Tyryshkin | S. Shankar | M. L. W. Thewalt | S. A. Lyon | K. M. Itoh | M. S. Brandt

Online Reference

Manganese-hydrogen complexes in Ga1-xMnxN

Phys. Rev. B 80, 205205 (2009)

C. Bihler | U. Gerstmann | M. Hoeb | T. Graf | M. Gjukic | W. G. Schmidt | M. Stutzmann | M. S. Brandt

Online Reference