Magneto-optical studies of compressively strained GaInP/AlGaInP multiple quantum wells
SOLID STATE ELECTRON 40:1-8 (1996) 597-600
Abstract:
A series of compressively strained G(0.44)In(0.56)P/(Al0.7Ga0.3)(0.52)In-0.48 P multiple quantum well structures have been studied in magnetic fields up to 45 T. Laudau levels from several excitomic transitions have been observed in reflectivity spectra, allowing an accurate determination of the carrier masses and excitonic binding energies. It is shown that while the observed masses are lower than those seen in unstained GaInP/AlGaInP for wide wells, as the width decreases the mass in the strained samples increases sharply.Magnetophonons in short-period superlattices
PHYSICAL REVIEW B 54:20 (1996) 14540-14549
Observation of the zero Hall resistance state in a semimetallic superlattice
SURF SCI 362:1-3 (1996) 481-484
Abstract:
The quantum Hall effect has been measured in an intrinsic semimetallic superlattice with almost equal electron and hole densities. Giant oscillations are seen in the Hall resistivity, and at high fields and pressures a zero-resistance state is observed where the Hall resistivity goes to zero due to compensation of the Hall fields of the two carrier types. This behaviour is interpreted in terms of the limiting properties of rho(xx) and rho(xy)Photoconductivity studies of InAsP/InP heterostructures in applied magnetic and electric fields
SEMICONDUCTOR SCIENCE AND TECHNOLOGY 11:1 (1996) 34-38
Pulsed-magnetic-field measurements of the composite-fermion effective mass
PHYSICAL REVIEW B 53:4 (1996) 2057-2063