Parameters of chromium impurity band in Pb1-x-yGexCryTe alloys
Galvanomagnetic properties ( = 4.2 K, ≤ 8 T) of -Pb1-x-yGexCryTe alloys under variation of alloy composition ( x = 0.02-0.10, z = 0.01-0.03) and under pressure (P ≤ 17 kbar) have been investigated. Magnetic field dependences of the Hall coefficient H near the metal- insulator and insulator-m...
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| Autores principales: | , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2009
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/867b21098ca24005b103d10128fdb1ab |
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| Sumario: | Galvanomagnetic properties ( = 4.2 K, ≤ 8 T) of -Pb1-x-yGexCryTe alloys under
variation of alloy composition ( x = 0.02-0.10, z = 0.01-0.03) and under pressure (P ≤ 17 kbar)
have been investigated. Magnetic field dependences of the Hall coefficient H near the metal-
insulator and insulator-metal transitions induced by variation of the matrix composition and
pressure were obtained. In terms of the two-band conduction model, the main parameters of
charge carriers were estimated. Experimental results are discussed in the framework of the
diagrams of the electronic structure reconstruction, assuming a significant widening of chromium
impurity band and its overlapping with the bottom of conduction band in the insulating phase. |
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