Ulrich Roessler

Ulrich Rößler (born June 9, 1939 in Cottbus ) is a German solid-state physicist .

Life

Rößler grew up in Cottbus until 1955 and then went to Bielefeld with his family . He studied physics at the Philipps University in Marburg . He received his diploma in 1963 with the thesis "Methods for calculating the band structure of semiconductors with diamond and zinc blende grids, especially kp perturbation calculation". He then continued his studies with Otfried Madelung as part of a dissertation on the subject of "Investigation of the energy band structure of cubic zinc sulfide using the APW method" and was awarded a doctorate in 1966. rer. nat. PhD.

From 1968 to 1969 he worked as a post-doctoral student at Brown University in Providence (Rhode Island, USA) with Manuel Cardona . This was followed by his habilitation in Marburg, a guest lecturer activity in Erlangen and already in 1972 - at the age of 33 - the appointment as professor at the University of Regensburg .

There he worked as a scientist and university lecturer at the Institute for Theoretical Physics until his retirement in 2004. Research stays and guest lectures brought him to Strasbourg (1978), to the Max Planck Institute for Solid State Research in Stuttgart (1977/78), to the University of California in San Diego (1987), to the High-Magnetic Field Laboratory in Grenoble ( 1992), to Trinity College in Dublin (1993 and 2003), to the Max Planck Institute for the Physics of Complex Systems in Dresden (1996), to the Autonomous University of Madrid (2001/2002) and most recently to the National University of Uzbekistan in Tashkent (2003) and the Mechnikov University in Odessa (2007).

In 2000 he was awarded the Alexander von Humboldt-José C. Mutis Prize from the Spanish Ministerio de Educación, Cultura y Deporte . In 2007 he was awarded an honorary doctorate by the Humboldt University of Berlin .

Services

research

Ulrich Rößler has made scientific achievements in the field of semiconductor theory and has published over 200 articles in internationally recognized specialist journals in his special field "Electrical properties of semiconductors and semiconductor nanostructures". So far (as of May 2009) it has achieved a Hirsch index of 35. As an expert in the so-called kp theory for calculating the electronic band structure of solids, he contributed significantly to the understanding of the electronic properties of semiconductors, solid noble gases , heterostructures and low-dimensional nanostructures (e.g. quantum dots ). As part of DFG funding projects (including the Collaborative Research Center 348 "Nanometer Semiconductor Components" (1991–2003)) he carried out important research on the quantum mechanical and semiclassical description of the physics of mesoscopic systems in an external magnetic field, using theoretical methods for the adequate treatment of the electron Electron interaction, far infrared absorption and scattering and magnetotransport phenomena were developed. It has always been his aim to work closely with experimenters, a distinctive feature of his scientific work.

During his time as a professor, he supervised a total of more than 50 undergraduate and graduate students, four of whom became university professors in physics.

Voluntary work

Since his appointment as professor at the University of Regensburg , Ulrich Rößler has been a member of the faculty council for over 20 years , two of which were also dean . For two terms he was the representative of the professors in the Senate of the University of Regensburg.

From 1987 to 1992 he was chairman of the specialist committee for semiconductor physics, from 1988 to 1993 a member of the IUPAP commission C8 (Semiconductors) and from 1992 to 1995 chairman of the condensed matter section of the German Physical Society . From 1990 to 2003 he was a member of the research council of the Max Planck Institute for Solid State Research in Stuttgart and was its chairman from 1995 to 1998.

From 1991 to 1994 he was chairman of the structure and appointment committee of the physics section (later department) at the Humboldt University in Berlin . Until the end of its work in February 1994, this commission was responsible for more than 30 appointment procedures for professorships with the aim of installing an efficient and competitive institute after reunification .

From 2008 to 2014 he was the first chairman of the Regensburg Music Association

Fonts

Textbooks

• Solid State Theory: An Introduction . Springer, Berlin; Heidelberg; New York 2004. New edition: Springer, Berlin 2009, ISBN 978-3-540-92761-7 .

Selected scientific articles

• Commensurability effects in Andreev antidot billiards , J. Eroms, M. Tolkiehn, D. Weiss, U. Rössler, J. de Boeck, G. Borghs: Europhys. Lett. 58, 569 (2002).
• Bloch electrons in a magnetic field: Hofstadter's butterfly , U. Rössler, M. Suhrke in Advances in Solid State Physics 40 (Eds .: B. Kramer), p. 35, Vieweg, Braunschweig (2000).
• Fermiology of two-dimensional lateral superlattices , C. Albrecht, JH Smet, D. Weiss, K. von Klitzing, R. Hennig, M. Langenbuch, M. Suhrke, U. Rössler, V. Umansky, H. Schweizer: Phys. Rev. Lett. 83: 2234 (1999).
• Spontaneously broken time-reversal symmetry in quantum dots , O. Steffens, U. Rössler, M. Suhrke: Europhys. Lett. 44: 222 (1998).
• Tunable spin-splitting and spin-resolved ballistic transport in GaAs / AlGaAs two-dimensional hole gas , JP Lu, JB Yau, SP Shukla, M. Shayegan, L. Wissinger, U. Rössler, R. Winkler: Phys. Rev. Lett. 81: 1282 (1998).
• Electron g factor in one- and zero-dimensional semiconductor nanostructures , AA Kiselev, EL Ivchenko, U. Rössler: Phys. Rev. B 58, 16353 (1998).
• Heavy-light hole mixing at zinc-blende (001) interfaces under normal incidence , EL Ivchenko, A. Yu. Kaminski, U. Rössler: Phys. Rev. B 54, 5852 (1996).
• General Approach to the Envelope-Function Approximation Based on a Quadrature Method , R. Winkler, U. Rössler: Phys. Rev B 48, 8918 (1993).
• Spin Splitting in Semiconductor Heterostructures for B → 0 , G. Lommer, F. Malcher, and U. Rössler: Phys. Rev. Lett. , 60: 728 (1988).
• Magneto-optic transitions and non-parabolicity parameters in the conduction band of semiconductors , M. Braun and U. Rössler: J. Phys. C: Solid State Phys. 18: 3365 (1985).
• Nonparabolicity and Warping in the Conduction-Band of GaAs , U. Rössler: Solid State Comm. 49: 943 (1984).
• Quantum resonances in the valence bands of zinc-blende semiconductors. I. Theoretical aspects , H.-R. Trebin, U. Rössler, R. Ranvaud: Phys. Rev. B 20, 686 (1979).
• Semiempirical Band Structure Theory , U. Rössler and J. Treusch: Report on Progress in Physics 35, 883 (1972).
• Electron and exciton states in solid rare gases , U. Rössler: Physica Status Solidi 42, 345 (1970).
• Energy Bands of Hexagonal II-VI Semiconductors , U. Rössler: Phys. Rev. 184, 733 (1969).
• Statements about the band structure of rhombohedral boron with the kp perturbation calculation , U. Rössler: Z. Naturforschung 19a, 1125 (1964).

As editor

• Solid State Problems / Advances in Solid State Physics , Vols. 28-32, Vieweg, Braunschweig (1988-1992).
• Landolt-Börnstein: Numerical Data and Functional Relationships in Science and Technology - New Series, Group 3 : Condensed Matter, Supplement to III / 17, III / 22, III / 41 and III / 44 Rössler, Ulrich (Ed.), Springer, Berlin; Heidelberg; New York (2001-2015).

Web links

• Website of the Ulrich Rössler working group

Individual evidence

1. ↑ Documento BOE-A-2001-12390. In: Boletín Oficial del Estado. Agencia Estatal, June 27, 2001, accessed March 31, 2019 (Spanish). 
2. ↑ Ceremonial event for the award of an honorary doctorate from the Humboldt University to Prof. Dr. Ulrich Roessler. Accessed March 31, 2019 . 
3. ↑ Nanometer Semiconductor Components - Basics - Concepts - Realizations / SFB 348. Archived from the original on December 17, 2004 . 
4. ↑ Laborious departure (for the renewal of the physics faculty of the Humboldt University, from ZEIT-online) . TIME ONLINE. Retrieved May 10, 2009.
5. ^ Website of the Musikverein Regensburg eV