E. Deleporte, J.M. Berroir, et al.
Superlattices and Microstructures
Photocurrent measurements in GaAs-GaA1As superlattices grown by molecular-beam epitaxy enable us to observe simultaneously quantum states and associated anomalous conductance. The spectrum in the photocurrent shows a series of peaks of photon energies corresponding to transitions between quantum states in the valence and conduction bands. As a function of applied voltage, the photocurrent exhibits pronounced negative differential conductance when the potential-energy difference between two adjacent wells of the superlattice exceeds the bandwidth of the quantum states. © 1975 The American Physical Society.
E. Deleporte, J.M. Berroir, et al.
Superlattices and Microstructures
R. Tsu, L. Esaki
Applied Physics Letters
R. Tsu, G.H. Döhler
Physical Review B
D.D. Awschalom, M.R. Freeman, et al.
Surface Science