R.J. Haug, H. Munekata, et al.
Japanese Journal of Applied Physics
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.
R.J. Haug, H. Munekata, et al.
Japanese Journal of Applied Physics
J.W. Mayer, J.F. Ziegler, et al.
Journal of Applied Physics
R. Tsu, L. Esaki, et al.
Physical Review Letters
L.L. Chang, W.E. Howard
Applied Physics Letters