28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

The study of metal-insulator transition at very low temperature in p-type 70Ge:Ga semiconductor by applying the scaling laws

Not scheduled
JW Marriott Starr Pass Resort

JW Marriott Starr Pass Resort

Tucson, Arizona USA
Poster Presentation ICMC-05 - Thin Films


Prof. Abdelhamid El kaaouachi (University Ibn Zorh Faculty of sciences, Agadir, Morocco)


We studied the metal-insulator transition (MIT) induced by the magnetic field, in barely metallic and compensated p-type. 70Ge:Ga using the scaling laws, at low temperature in range (0.65 -0048 K) and in magnetic field up to 5.3 T. We have determined the magnetic field for which the conductivity changes from the metallic behaviour to the insulator regime. On the metal side of the MIT, the electrical conductivity obeys the relation σ = σ0 + mT1/2 down 48 mK. The zero-temperatureconductivity can be described by scaling laws.We reanalyzed experimental data already published in reference " MichioWatanabe, Kohei M. Itoh, Youiti Ootuka, and Eugene E. Haller , Phys. Rev. B. 60, 15 817-15 823 (1999).".

Primary author

Prof. Abdelhamid El kaaouachi (University Ibn Zorh Faculty of sciences, Agadir, Morocco)


Prof. Hassan El idrissi (Laboratoire Electronique, Électrotechnique, Automatique et Traitement de l'Information, Département Génie Electrique Mohammadia Morocco) Dr Mohammed Errai (Faculty of sciences Ibn Zohr, Agadir, Morocco)

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