Main research topics

Fields of activity

  • Quantum mechanics and statistics of disordered systems
  • many-particle theory, highly correlated electronic systems, heavy fermion
  • Optical properties of low-dimensional structures
  • Numerical methods
  • density functional theory
  • Quantum chemical calculations
  • Time-dependent nanophysics: ultra-short term kinetics, energy relaxation processes and optical coherence
  • Electronic structure of solids, band structure calculations
  • Growth mechanisms and structure of semiconductor heterointerfaces
  • Elemental excitations in amorphous systems
  • Molecules on surfaces
  • Transport in nanostructures, non-equilibrium green functions
  • Conjugated polymers
  • Excitons in molecular systems

Selected research topics


Wellenfunktionsstatistik H. Ludwig, E. Runge, R. Zimmermann, 'Exact calculation of distributions for excitonic oscillator strength and inverse participation ratio...', Phys. Rev. B 67, 205302 (2003)

Erhöhte Rückstreung von lokalisierten Zuständen W. Langbein, E. Runge, V. Savona, R. Zimmermann, 'Enhanced resonant backscattering of excitons in disordered quantum wells', Phys. Rev. Lett. 89, 157401 (2002)

Effektive Mobilitätskante U. Jahn, M. Ramsteiner, R. Hey, H. T. Grahn, E. Runge, R. Zimmermann, 'Effective exciton mobility edge in narrow quantum wells', Phys. Rev. B 56, R 4387 (1997)

Theorie der Zufallsmatrizen und Levelkorrelationsspektroskopie F. Intonti, et al., 'Quantum mechanical repulsion of exciton levels in a disordered quantum well', Phys. Rev. Lett. 87, 076801 (2001)



Dynamische Eigenschaften von Tunnelstrukturen E. Runge and H. Ehrenreich, 'Response and transit times in quantum-well structures', Phys. Rev. B 45, 9145 (1992)

Theorie des Rauschen E. Runge, 'Noise in alloy-based resonant-tunneling structures', Phys. Rev. B 47, 2003 (1993)

Thermoelektrische Eigenschaften aniotroper Materialien W.E. Bies, R.J. Radtke, H. Ehrenreich, E. Runge, 'Thermoelectric properties of anisotropic semiconductors', Phys. Rev. B 65, 085208 (2002)



"Reines" Dephasieren R. Zimmermann and E. Runge, 'Dephasing in quantum dots via electron-phonon interaction', Proc. 26th ICPS, Edinburgh, 2002

Quantitative Speckle-Analyse E. Runge and R. Zimmermann, 'Statistical properties of speckle distribution in resonant secondary emission', Phys. Rev. B 61, 4786 (2000)

Spin-Streuung und -Polarisationsverlust R. Zimmermann, W. Langbein, E. Runge, J.M. Hvam, 'Localized excitons in quantum wells show spin relaxation without coherence loss', Physica E 10, 40 (2001)



Bandstruktur-Rechnungen für Schwere-Fermionen-Materialien E. K. R. Runge, R. C. Albers, N. E. Christensen, G. Zwicknagl, 'Electronic structure of CeRu2Si2', Phys. Rev. B 51, 10375 (1995)

Hundsche Regeln und partielle Lokalisierung in f-Systemen D.V. Efremov, N. Hasselmann, E. Runge, P. Fulde, G. Zwicknagl, 'On a dual model for 5f electrons', Phys. Rev. B 69, 115114 (2004)

Zweiteilchen-Dispersion in realen Halbleitern A. Siarkos and E. Runge, 'Quantum-wire exciton dispersion in a multiband real-space scheme', Phys. Rev. B 61, 16 854 (2000)



Echo-Phänomene in wechselwirkenden Systemen S. Sauter-Fischer, E. Runge, R. Zimmermann, 'Partial dephasing in interacting many-particle systems and current echo', Phys. Rev. B 57, 4299 (1998)

Gebrochen-rationale Funktionale für Streuamplituden E. K. U. Gross and E. Runge, 'Functionals of fractional form in variational scattering theory', Phys. Rev. A. 26, 3004 (1982)

Dichtematrixtheorie für 'Few-particle'-Systeme A. Esser, E. Runge, R. Zimmermann, W. Langbein, 'Photoluminescence and radiative lifetime of trions in GaAs quantum wells', Phys. Rev. B 62, 8232 (2000)

Nichtgleichgewichtstransport E. Runge and H. Ehrenreich, 'Non-equilibrium transport in alloy based resonant tunneling systems', Ann. Phys.-New York 219, 55 (1992)


DICHTEFUNKTIONAL-THEORIE E. Runge and E. K. U. Gross, 'Density-functional theory for time-dependent systems', phys. stat. sol. (a) 164, 511 (1997)

Anwendung auf einfache Modelle E. Runge and G. Zwicknagl, 'Electronic structure calculations and strong correlations: a model study', Ann. Physik 5, 333 (1996)



Exzitonen P. M. Young, E. Runge, M. Ziegler and H. Ehrenreich, 'Optical absorption and exciton linewidth of Zn1-xCdxSe quantum wells', Phys. Rev. B 49, 7424 (1994)

Hochanregung Don H. Kim, H. Ehrenreich and E. Runge, 'Band structure of femtosecond-laser-pulse excited GaAs', Sol. State Comm. 89, 119 (1994)

II-VI-Laser M. E. Flatté, E. Runge and H. Ehrenreich, 'Coherent exciton lasing in ZnSe/ZnCdSe quantum wells ?', Appl. Phys. Lett. 66, 1313 (1995)

Spektroskopie E. Runge, J. Menniger, U. Jahn, R. Hey, H. T. Grahn, 'Roughness of heterointerfaces ...: Interpretation of cathodoluminescence images', Phys. Rev. B 52, 12207 (1995)

Ultra-schnelle Rayleigh Streuung V. Savona, E. Runge, R. Zimmermann, S. Haacke, B. Deveaud, 'Theory of ultrafast Rayleigh scattering in semiconductor quantum wells', phys. stat. sol. (b) 221, 365 (2000)



Phonon-assistiertes Tunneln C. H. Grein, E. Runge, H. Ehrenreich, 'Phonon-assisted transport in double-barrier resonant-tunneling structures', Phys. Rev. B 47, 2003 (1993)

Thermische Leitfähigkeit W.E. Bies, H. Ehrenreich, E. Runge, 'Thermal conductivity reduction in HgTe/CdTe superlattices', J. Appl. Phys. 91, 2033 (2002)