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Insulator-Metal Transition Induced by Pressure in Pb1-xGexTe Doped with Yb

Published online by Cambridge University Press:  10 February 2011

E. P. Skipetrov ,
N. A. Chernova ,
E. I. Slyn'ko  and
Yu.K. Vygranenko
E. P. Skipetrov
Affiliation:
Faculty of Physics, Moscow State University, 119899 Moscow, Russia, [email protected]
N. A. Chernova
Affiliation:
Faculty of Physics, Moscow State University, 119899 Moscow, Russia, [email protected]
E. I. Slyn'ko
Affiliation:
Institute of Material Science Problem, Chernovtsy Department, 274001 Chernovtsy, Ukraine
Yu.K. Vygranenko
Affiliation:
Institute of Material Science Problem, Chernovtsy Department, 274001 Chernovtsy, Ukraine
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Abstract

In this paper the galvanomagnetic properties (4.2≤T≤300 K) of Pb1-xGexTe(x≤0.038) doped with Yb were investigated both under atmospheric pressure and under hydrostatic compression up to 12 kbar. The variation of the energy diagram of Pb1-xGexTe<Yb> under variation of Ge concentration and under pressure were proposed. It was shown that change of the energy spectrum under pressure leads to the insulator-metal transition due to redistribution of electrons between the valence band and the deep Yb level. By comparing theoretical and experimental dependences of hole concentration on pressure the parameters of the Yb-induced deep level were determined.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 499: Symposium DD – High Pressure Materials Research , 1997 , 207
Copyright
Copyright © Materials Research Society 1998

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References

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