Resonant State of 4f14/13 Yb Ion in Pb1-xGexTe |
| E. Grodzicka, W. Dobrowolski, T. Story Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland E.I. Slynko, Yu.K. Vygranenko Institute of Material Science Problems, Chernovtsy Department, 5 Wilde St., Chernovtsy 274001, Ukraine M.M.H. Willekens, H.J.M. Swagten and W.J.M. de Jonge Department of Physics, Eindhoven University of Technology, P.O.Box 513, 5600 MB Eindhoven, The Netherlands |
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| The study of transport and of magnetic properties of Pb1-xGexTe: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 Pb1-xGexTe 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. |
| DOI: 10.12693/APhysPolA.90.801 PACS numbers: 71.55.Ht, 75.20.Ck |