Role of bright and dark excitons in the temperature-dependent photoluminescence of carbon nanotubes
Physical Review Letters 98 (2007) 027404 4pp
Stark magnetophonon resonance observation in InAs/GaSb superlattices
AIP CONF PROC 893 (2007) 587-588
Abstract:
We present a magnetotransport study of Stark quantised InAs/GaSb superlattices at low temperatures. Analysis of magnetotransport resonances identifies a series of Stark magnetophonon resonance (SMPR) features in which a triple resonance of Bloch energy, cyclotron energy and longitudinal optic phonon energies is realised.Superlattice magnetophonon resonances in strongly coupled InAs/GaSb superlattices
PHYSICAL REVIEW B 76:7 (2007) ARTN 075309
Temperature dependent photoluminescence from carbon nanotubes
AIP CONF PROC 893 (2007) 1009-1010
Abstract:
The temperature dependence of the photoluminescence intensity from frozen single walled carbon nanotube solutions is reported. This is modelled assuming that it is dominated by the small energy splitting between the dark and bright states of the singlet excitons which are found to be in the region of 1-5 meV for nanotubes of 0.8-1.2nm. The luminescence is strongly enhanced by a magnetic field along the tube axis due to the mixing of the different valley states of the excitons.Temperature-dependent cyclotron resonance in a hybridized electron-hole system in InAs/GaSb heterostructures
SEMICONDUCTOR SCIENCE AND TECHNOLOGY 22:3 (2007) 194-202