Magnetic freeze-out in n type indium antimonide

The transverse components of the conductivity tensor of a number of specimens of n type indium antimonide in a magnetic field large enough to cause appreciable freeze-out are analyzed to give the electron concentration remaining in the conduction band. For magnetic fields greater than 5kG, the two-band model used by Miyazawa and Ikoma (1967) gives the same results as is obtained by assuming the contribution to the component of the conductivity sigma xy of electrons frozen out is negligible. The donor activation energy E D deduced from these measurements is compared with the values obtained from the longitudinal component of the conductivity sigma zz .