Spin disorder scattering

Another important issue requiring further studies is the role of carrier-carrier correlation. It is known that the effect of disorder on carrier-carrier interactions controls the localization and enhances the spin susceptibility (Altshuler and Aronov 1985), and thus the tendency towards ferromagnetism. However, spin-disorder scattering may limit the efficiency of this process (Altshuler and Aronov 1985). If this is the case, LSDA (Jungwirth et al. 1999 Lee et al. 2000) can provide a reasonable evaluation of the relevant Fermi-liquid parameter. 

These compounds are metallic conductors, and similar to YNiPb, the Bloch-Griineisen relation is also valid for Y2Ni2Pb. The magnetic ordering manifests in the temperature dependence of the resistivities through abrupt changes in the slopes (decrease of spin-disorder scattering). 

Haas, C., Spin-Disorder Scattering and Magnetoresistance of Magnetic Semiconductors. Phys. Rev., 1968. 168(2) p. 531-538. 

Fig. 7. Resistivity data of YbAls and YbAl2. The solid lines give the experimentally obtained Ap p vs. T curves corrected for residual and electron-phonon scattering contributions. The dotted lines show the estimated contributions due to spin-disorder scattering by the Yb magnetic moments described by the second term of eq. (16). The dashed lines show the estimated contribution connected with scattering processes on Yb virtual bound states which is described by the first term of eq. (16) (Havinga et al., 1973).

Contribution of spin-disorder scattering to the thermopower in T > Tord... 

Gratz (1981) was able to obtain the contribution of spin-disorder scattering to... 

S" and S denote the diffusion thermopower of a non-magnetic RI compound and a magnetic RI compound, respectively. So, Sph, and Sspd are the contributions to the thermopower due to impurity scattering, phonon scattering, and spin-disorder scattering, respectively, p, po, Pph, and Pspd represent the total resistivity, and residual resistivity, the phonon resistivity, and the spin-disorder resistivity, respectively. 

Depending on the magnetic ground state of the ytterbimn atoms we observe a variety of diflerent transport properties. Several of the YhTX intermetallics behave like classical metals. In those cases where the ytterbium 4f eleetrons interact with the conduction electrons we observe Kondo-lattiee behavior at low temperatures. The onset of magnetie ordering expresses itself as a drop at low temperatures due to a decrease of spin disorder scattering. 

Region 1 (T> 7, Tq, T ). Phonons and electrons are scattered by disordered spins (spin-disorder scattering). 

Electrical resistivity due to spin-disorder scattering of electrons. 

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