Transport properties of the pressure-induced amorphous semiconductor state of Al32Ge68статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 декабря 2013 г.
Аннотация:The temperature dependences of the dc conductivity and thermopower of the bulk amorphous alloy Al32Ge68 were investigated at 6-420 K and at 80-370 K, respectively. The samples were prepared by solid-state amorphization of a quenched crystalline high-pressure phase while heating from 77 to 400 K at ambient pressure. Amorphous Al32Ge68 was found to be a p-type semiconductor with an unusual combination of transport properties. The behaviour of the properties was described semi-quantitatively in terms of a modified Mott-Davis model assuming that the Fermi level lies inside the valence band tail.