59 results on '"Grahn, H."'
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2. Stacking faults as quantum wells in nanowires: Density of states, oscillator strength, and radiative efficiency
3. Time-resolved photoluminescence spectroscopy of individual GaN nanowires
4. Photoexcited semiconductor superlattices as constrained excitable media: Motion of dipole domains and current self-oscillations
5. Co2FeSi/GaAs/(Al,Ga)Asspin light-emitting diodes: Competition between spin injection and ultrafast spin alignment
6. Strain-confinement mechanism in mesoscopic quantum disks based on piezoelectric materials
7. Ultrafast behavior of the polarization filtering in anisotropically strainedM-plane GaN films: A time-resolved pump-probe spectroscopy study
8. Intersubband transitions in dilute(In,Ga)(As,N)∕(Al,Ga)Asmultiple quantum wells analyzed within a three-bandk∙pmodel
9. Formation of electric-field domains inGaAs∕AlxGa1−xAsquantum cascade laser structures
10. Field dependence of the carrier occupation in double-quantum-well superlattices
11. Electrical spin injection from ferromagnetic MnAs metal layers into GaAs
12. Relocation dynamics of domain boundaries in semiconductor superlattices
13. Electronic band structure of wurtzite GaN under biaxial strain in theMplane investigated with photoreflectance spectroscopy
14. Magnetotransport investigations of structural irregularities in a weakly coupled GaAs/AlAs superlattice under domain formation
15. Electric-field-induced anti-Stokes photoluminescence in an asymmetric GaAs/(Al,Ga)As double quantum well superlattice
16. Exciton capture and losses in a stacked submicron array of sidewall quantum wires on patternedGaAs(311)Asubstrates
17. Multifractal dimension of chaotic attractors in a driven semiconductor superlattice
18. Impact of exciton diffusion on the optical properties of thin GaN layers
19. Influence of higher harmonics on Poincaré maps derived from current self-oscillations in a semiconductor superlattice
20. Time-resolved photoluminescence study of excitons in hexagonal GaN layers grown on sapphire
21. Relocation time of the domain boundary in weakly coupled GaAs/AlAs superlattices
22. Enhanced anti-Stokes photoluminescence in aGaAs/Al0.17Ga0.83Assingle quantum well with growth islands
23. Excitonic properties of weakly coupled GaAs single quantum wells investigated with high-resolution photoluminescence excitation spectroscopy
24. Magneto-oscillations in the electroluminescence intensity of resonantly coupled GaAs-AlAs superlattices: The magnetoexciton resonance
25. Effective exciton mobility edge in narrow quantum wells
26. Acoustic-phonon Raman scattering from Wannier-Stark levels in GaAs/AlAs superlattices
27. Excitonic effects in the miniband formation of graded-gap superlattices
28. Enhancement of electron-phonon interaction in ultrashort-period GaAs/AlAs superlattices
29. Electrically tunable GHz oscillations in doped GaAs-AlAs superlattices
30. Superradiant emission from Bloch oscillations in semiconductor superlattices
31. Electric-field domain formation in type-II superlattices
32. Exciton localization, photoluminescence spectra, and interface roughness in thin quantum wells
33. Time-resolved transport between resonantly coupled Landau levels in semiconductor superlattices
34. Nonequilibrium optical-phonon population by sequential resonant tunneling in GaAs-AlAs superlattices
35. Formation times of electric-field domains in doped GaAs-AlAs superlattices
36. Self-oscillations of domains in doped GaAs-AlAs superlattices
37. Probing growth-related disorder by high-field transport in semiconductor superlattices
38. Picosecond dynamics of excitons in cubic GaN
39. Roughness of heterointerfaces and averaging effects by excitons: Interpretation of cathodoluminescence images
40. Time-resolved photoluminescence investigations of electric-field domain formation in GaAs-AlAs superlattices
41. Investigation of miniband formation in a graded-gap superlattice by electroreflectance spectroscopy
42. Bipolar charge redistribution in resonant-tunneling light-emitting diodes
43. Nonresonant carrier transport through high-field domains in semiconductor superlattices
44. Domain-wall kinetics and tunneling-induced instabilities in superlattices
45. Exciton dynamics within growth islands of GaAs/Al0.17Ga0.83As single quantum wells
46. Electroluminescence study of resonant tunneling in GaAs-AlAs superlattices
47. Competition between thermally induced resonant tunneling and phonon-assisted tunneling in semiconductor superlattices
48. Growth of electric-field domains in quantum-well structures: Correlation with intersubband Raman scattering
49. Nonthermal occupation of Γ andXstates in GaAs/AlAs superlattices
50. Line shape of electroreflectance spectra in semiconductor superlattices
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