Two-dimensional properties of grain boundaries in germanium bicrystals are studied at liquid helium temperature ranging from 1.6 to 4.2 K.The experimental results indicate that the magnetoresistivity for 8°tilt a...Two-dimensional properties of grain boundaries in germanium bicrystals are studied at liquid helium temperature ranging from 1.6 to 4.2 K.The experimental results indicate that the magnetoresistivity for 8°tilt angle increases exponentially with the magnetic held intensity square in weak magnetic field and with the linear magnetic field intensity in strong magnetic field.The phenomena are explainable with the percolation theory.展开更多
文摘Two-dimensional properties of grain boundaries in germanium bicrystals are studied at liquid helium temperature ranging from 1.6 to 4.2 K.The experimental results indicate that the magnetoresistivity for 8°tilt angle increases exponentially with the magnetic held intensity square in weak magnetic field and with the linear magnetic field intensity in strong magnetic field.The phenomena are explainable with the percolation theory.
