Magneto-transport properties of Si1-xGex whiskers

摘要

The field and temperature magnetoresistance dependences of the Si1-xGex (x = 0.05) whiskers at low temperatures were studied in the magnetic field range of 0-14 T with using of the Bitter magnet. The investigated whiskers with diameters 5-15 mu m were grown by chemical vapour deposition with a doping concentration in the vicinity to the metal-insulator transition (N-c AP; 7.8 . 10(18) cm(-3)). The linear magnetoresistance effect of the solid solution Si1-xGex whiskers was found in all range of the magnetic fields due to the surface coherence scattering of charge carriers as a result of conduction in the whisker core-shell structure. Published under an exclusive license by AIP Publishing.