Abstract
The low-field Hall coefficient RH0 and transverse magnetoresistance coefficient Pt0 have been measured in a monocrystalline specimen of zone-refined aluminium quenched from 553 and 573 K. The measurements have been made at 4.2 K with asuperconducting chopper amplifier with a sensitivity better than 5 pV. For vacancies as scattering centres in aluminium, the low-field coefficients have been obtained as RH0=−2.02×10−11 m3·C−1 and Pt0=0.45×10−19 Ω2·m2·T−2. These data are analysed according to the three-group model of Kesternich [W. Kesternich: Phys. Rev. B13 (1976) 4227]. The scattering anisotropy due to a vacancy is similar to that due to Mn, Zn and Ag atoms, but different from that due to Li, Mg and Si atoms. It is concluded that the scattering potential of a vacancy strongly extends into the interstitial region.
