Semiconductors

, Volume 48, Issue 9, pp 1178–1184

Effect of nanobridges on the emission spectra of a quantum dot-quantum well tunneling pair

  • V. G. Talalaev
  • G. E. Cirlin
  • L. I. Goray
  • B. V. Novikov
  • M. E. Labzovskaya
  • J. W. Tomm
  • P. Werner
  • B. Fuhrmann
  • J. Schilling
  • P. N. Racec
Semiconductor Structures, Low-Dimensional Systems, and Quantum Phenomena

DOI: 10.1134/S1063782614090218

Cite this article as:
Talalaev, V.G., Cirlin, G.E., Goray, L.I. et al. Semiconductors (2014) 48: 1178. doi:10.1134/S1063782614090218

Abstract

Emission in the narrow spectral range 950–1000 nm is obtained at the nanobridge optical transition involving experimentally and theoretically observed hybrid states in the InGaAs system, i.e., quantum dot-nanobridge-quantum well. It is experimentally shown that the oscillator strength of the new transition sharply increases in the built-in electric field of a pin junction. In the mode of weak currents in the system under study, the nanobridge transition is the dominant electroluminescence channel. At current densities >10 A cm2, nanobridge “burning” is observed, after which the system becomes a “quasi-classical” quantum dot-quantum well tunneling pair separated by a barrier.

Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • V. G. Talalaev
    • 1
    • 2
    • 3
    • 4
  • G. E. Cirlin
    • 4
    • 5
    • 6
    • 7
    • 10
  • L. I. Goray
    • 5
    • 6
  • B. V. Novikov
    • 4
  • M. E. Labzovskaya
    • 4
  • J. W. Tomm
    • 3
  • P. Werner
    • 1
  • B. Fuhrmann
    • 8
  • J. Schilling
    • 2
    • 8
  • P. N. Racec
    • 9
  1. 1.Max Planck Institute of Microstructure PhysicsHalle (Saale)Germany
  2. 2.ZIK SiLi-nanoMartin Luther University Halle-WittenbergHalleGermany
  3. 3.Max Born Institute for Nonlinear Optics and Short Pulse SpectroscopyBerlinGermany
  4. 4.Fock Institute of PhysicsSt. Petersburg State UniversityPetrodvorets, St. PetersburgRussia
  5. 5.Saint Petersburg Academic University-Nanotechnology Research and Education CenterRussian Academy of SciencesSt. PetersburgRussia
  6. 6.Ioffe Physical-Technical InstituteRussian Academy of SciencesSt. PetersburgRussia
  7. 7.Institute for Analytical InstrumentationRussian Academy of SciencesSt. PetersburgRussia
  8. 8.Interdisciplinary Center of Materials ScienceMartin Luther UniversityHalleGermany
  9. 9.Weierstrass Institute for Applied Analysis and StochasticsBerlinGermany
  10. 10.Saint Petersburg State Polytechnic UniversitySt. PetersburgRussia

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