T. Story et al., ELECTRON-PARAMAGNETIC-RESONANCE KNIGHT-SHIFT IN SEMIMAGNETIC (DILUTEDMAGNETIC) SEMICONDUCTORS, Physical review letters, 77(13), 1996, pp. 2802-2805
The effect of the carrier concentration induced shift of the g factor
(the Knight shift) of the Mn2+ magnetic moment in PbTe and SnTe semico
nducting matrices is experimentally observed and is of different sign
for n- and for p-type crystals. The analysis of this effect allows for
a straightforward determination of both the sign and the magnitude of
the free carrier-local moment exchange integrals for holes and electr
ons in PbTe, as well as for light and heavy holes in SnTe.