Quantum versus classical scattering time in liquid phase epitaxial Ga/sub 0.47/In/sub 0.53/As/InP

The authors present the results of Shubnikov m- effect measurements in two-dimensional electron gas in modulation-doped Ga/sub 0.47/In/sub 0.53/As/InP heterostructures grown by liquid phase epitaxy. Shubnikov-de Haas measurements were performed at 4.2 K temperature in magnetic fields up to 5.3 Tesla using a superconducting magnet system. From the magnetoresistance oscillation amplitudes the quantum scattering time and its ratio to the classical scattering time were deduced.<
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