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Resonant State of 4f^{14/13} Yb Ion in Pb_{1-x}Ge_{x}Te

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Grodzicka E., Dobrowolski W., Story T., Slynko E., Vygranenko Y. K., Willekens M., Swagten H., de Jonge W.

Acta Physica Polonica A

1996

vol. 90

issue 4

801-804

The study of transport and of magnetic properties of Pb_{1-x}Ge_{x}Te:Yb mixed crystals (0 ≤ x ≤ 0.04) is reported. It is shown that Yb forms a donor state resonant with the PbTe valence band. The donor state position may be tuned (shifted relative to the energy gap) by admixture of Ge. The properties of the Yb ion in the Pb_{1-x}Ge_{x}Te matrix makes the system unique from the point of view of magnetic properties. It is demonstrated that the change of the conductivity type from p to n induces transitions from the paramagnetic state to the diamagnetic one.

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1 Acta Physica Polonica A

1 1996

1 Dobrowolski W.

1 Grodzicka E.

1 Slynko E.

1 Story T.

1 Swagten H.

1 Vygranenko Y. K.

1 Willekens M.

1 de Jonge W.

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Resonant State of 4f^{14/13} Yb Ion in Pb_{1-x}Ge_{x}Te