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4 papers · 2 filters
Interface roughness transport in THz quantum cascade detectors
Emmanuel Lhuillier, Isabelle Ribet-Mohamed, Emmanuel Rosencher +4
Infrared Detectors based on a Quantum Cascade have been proposed to suppress the dark current which is identified as a limiting factor in Quantum Well Infrared Photodetectors. Thos…
Quantum transport in weakly coupled superlattices at low temperature
E. Lhuillier, I. Ribet-Mohamed, A. Nedelcu +2
We report on the study of the electrical current flowing in weakly coupled superlattice (SL) structures under an applied electric field at very low temperature, i.e. in the tunneli…
Optical absorption to probe the quantum Hall ferromagnet at filling factor
P. Plochocka, J. M. Schneider, D. K. Maude +7
Optical absorption measurements are used to probe the spin polarization in the integer and fractional quantum Hall effect regimes. The system is fully spin polarized only at fillin…
Ultimate performance of Quantum Well Infrared Photodetectors in the tunneling regime
E. Lhuillier, I. Ribet-Mohamed, M. Tauvy +3
Thanks to their wavelength diversity and to their excellent uniformity, Quantum Well Infrared Photodetectors (QWIP) emerge as potential candidates for astronomical or defense appli…