Conductivity Near the Metal-to-Insulator Transition in Cd1-xMnxSe:Sc |
| P. Głód, M. Sawicki, A. Lenard, T. Dietl and W. Plesiewicz Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland |
| Received: August 8, 1990 |
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| Earlier studies of transition metal impurities in II-VI compounds suggest that Sc acts as a resonant donor. We performed Hall effect and conductivity measurements of CdSe:Sc and Cd0.95Mn0.05Se:Sc. The results, particularly the critical concentration of the metal-to-insulator transition, turned out to be similar to those obtained previously for Cd1-xMnxSe doped with hydrogenic-like impurities, such as In and Ga. Therefore, if the ground state of Sc impurity is indeed located above the bottom of the conduction band, our data demonstrate that the metal-to-insulator transition is primarily driven by the scattering, i.e. it corresponds to the Anderson localization. |
| DOI: 10.12693/APhysPolA.79.389 PACS numbers: 71.30.+h, 71.55.Jv |