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- W2171917170 abstract "The behaviour of variously compensated zinc-doped germanium samples in large electric fields has been studied. By operating in the temperature range that corresponds to a partial freezing out of the charge carriers on the impurity centres it has been possible to observe impact ionization breakdown, successively on the two acceptor levels of zinc. The most compensated samples exhibited a negative resistance, observable in a wide range of temperatures (78°K–14°K). The Hall mobility dependence versus the electric field is qualitatively explained by means of the “hot carriers” approximation; a mechanism for negative resistance(29) is generalized here, considering the special case. Nous avons étudié le comportement du Germanium dopé au Zinc, et compensé à différents degrés, lorsqu'il est soumis à un champ électrique intense. En opérant dans la gamme de températures correspondant à un piègeage partiel des porteurs libres sur les centres d'impuretés, il a été possible de réaliser de l'ionisation par choc, successivement sur les deux niveaux accepteurs du Zinc. Les échantillons les plus compensés ont présenté une résistance négative, observable dans une très large gamme de températures (de 78°K à 14°K). Les variations de la mobilité de Hall en fonction du champ électrique sont expliquées qualitativement à l'aide de l'approximation des “porteurs chauds”; pour rendre compte de la résistance négative, nous généralisons un mécanisme récemment proposé(29), en l'adaptant au cas présent." @default.
- W2171917170 created "2016-06-24" @default.
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- W2171917170 date "1962-03-01" @default.
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- W2171917170 title "Impact ionization in zinc-doped germanium at low temperatures" @default.
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- W2171917170 doi "https://doi.org/10.1016/0022-3697(62)90014-8" @default.
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