MAGNETICALLY STABILIZED ELECTRON-HOLE LIQUID IN INDIUM-ANTIMONIDE

Luminescence spectra of sufficiently pure n-type indium antimonide cry stals (N-D-N-A = (1-2).10(14) cm(-3)) in a magnetic field of up to 56 kOe, at temperatures of 1.8-2 K, and high optical pumping densities (m ore than 100 W/cm(2)), have been studied. More evidence of the existen ce of electron-hole liquid stabilized by magnetic field has been obtai ned, and its basic thermodynamic parameters as functions of magnetic f ield have ken measured. When the magnetic field increases from 23 to 5 5.2 kOe, the liquid density increases from 3.2.10(15) to 6.7.10(15) cm (-3), the binding energy per electron-hole pair rises from 3.0 to 5.2 meV, and the binding energy with respect to the ground exciton level ( work function of an exciton in the liquid) rises from 0.43 to 1.2 meV. (C) 1997 American Institute of Physics.