Scaling behaviors of magnetoconductivity in amorphous indium oxide near the metal-insulator transition

Magnetoconductivity is measured in an amorphous indium-oxide sample which is in the microscopic region. Two different scaling behaviors are observed for the magnetoconductivity The scaling behavior is determined by either the localization or the electron correlation effects, whichever becomes stronger more rapidly at a given temperature and magnetic field. Qualitative explanations are given for the observed scaling behaviors. A curve of a function of H/T2/3 exists on which all our magnetoconductivity data lie