Quantum Cascade Structures under high magnetic field

Nicolas Péré-Laperne (1) , Louis-Anne de Vaulchier (1) , Yves Guldner (1) , Carlo Sirtori (2) , Vincent Berger (2)

1 LPA - Laboratoire Pierre Aigrain
2 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques

Magneto-transport measurements have been performed on two quantum cascade structures, a laser and a detector. These experiments lead to determine the different scattering processes involved in these devices. In the lasers we find both an interface roughness mechanism and LO-phonon scattering of hot carriers in the upper state's Landau levels. In detectors we discover that an inelastic mechanism increase the dark current whereas an elastic one limits the detectivity.

Domaines: Autre [cond-mat.other]

Nicolas Péré-Laperne, Louis-Anne de Vaulchier, Yves Guldner, Carlo Sirtori, Vincent Berger. Quantum Cascade Structures under high magnetic field. International Journal of Modern Physics B, 2009, 23, pp.2861. ⟨hal-00518090⟩