Evidence from Transport Measurements at High Pressures for Donor Ions Occupying Non‐Equivalent Lattice Positions in InSb

Measurements of the Hall coefficient in undoped, extrinsic n‐type InSb were made as a function of temperature at hydrostatic pressures of several kbar. The results give evidence of the existence of donor states associated with ions which can occupy two non‐equivalent positions in the lattice.