S. von Molnár, H. Munekata, et al.
Journal of Magnetism and Magnetic Materials
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.
S. von Molnár, H. Munekata, et al.
Journal of Magnetism and Magnetic Materials
R. Tsu, F.C. Whitmore
Physics Letters A
M.R. Freeman, D.D. Awschalom, et al.
Physical Review Letters
H. Ohno, E. Mendez, et al.
Physical Review Letters