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- Title
Low-temperature variation of magnetic order in a nonmagnetic n-Ge:As semiconductor in the vicinity of the metal-insulator phase transition.
- Authors
Veinger, A.; Zabrodskii, A.; Makarova, T.; Tisnek, T.; Goloshchapov, S.; Semenikhin, P.
- Abstract
The phenomenon of the low-temperature transition from antiferro- to ferromagnetic ordering of impurity spins in a nonmagnetic compensated n-Ge:As semiconductor near the metal-insulator phase transformation has been experimentally observed. The effect is manifested by rather sharp changes in the spin density and g-factor in the electron spin resonance spectra. As the relative content of a compensating impurity (gallium) is reduced below 0.7, the transition temperature begins to decrease and, at a degree of compensation below 0.3, drops below the studied temperature range (i.e., below 2 K).
- Subjects
LOW temperatures; SEMICONDUCTORS; METAL-insulator transitions; PHASE transitions; FERROMAGNETIC materials; ELECTRON paramagnetic resonance; GERMANIUM
- Publication
Journal of Experimental & Theoretical Physics, 2013, Vol 116, Issue 5, p796
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/S1063776113050142