NEGATIVE DIFFERENTIAL MOBILITY IN INDIUM ANTIMONIDE

A Monte Carlo method has been used to calculate the velocity-field relationship for n-type indium antimonide at 77°K. Although a negative differential mobility due to the nonparabolicity of the (000) valley is predicted in agreement with previous theories, it is shown that the transfer of electrons to the 〈 111 〉 valleys produces a much larger negative differential mobility at lower electrical field strengths. © 1969 The American Institute of Physics.