Abstract
Far-infrared magnetotransmission measurements on n-type Cd1-xMnxSe imply the disappearance of optical excitation of D+D- complexes as well as a red shift of the absorption associated with photon-induced hopping in magnetic field B1 T. In these relatively high donor-concentration samples (aND13 0.15), these effects can be consistently understood within a model of hydrogen moleculelike pairing of electrons localized on neighboring donors. At B=0 the pair ground state is the spin singlet. The Zeeman effect of the triplet level (a few meV/T) causes the Sz=-1 state to cross the singlet level and become the ground state. The model also explains large negative magnetoresistance observed in this material.
| Original language | English |
|---|---|
| Pages (from-to) | 6221-6223 |
| Number of pages | 3 |
| Journal | Physical Review B |
| Volume | 30 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1984 |
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