Spin-orbit scattering

The pure RKKY interaction is isotropic, and the canonical spin glass systems are therefore often referred to as Heisenberg spin glasses. However, some anisotropy is also present in those systems originating from dipolar interaction and interaction of the Dzyaloshinsky-Moriya (DM) type [73]. The latter is due to spin-orbit scattering of the conduction electrons by non-magnetic impurities and reads... 

Fig. 1.24 Correction to the conductivity caused by spin-orbit scattering (Fukuyama and...

A further effect is discussed in Chapter 5, namely that of spin-orbit scattering. This effect preserves the coherence of the two scattered waves but changes the constructive interference into a destructive one. The characteristic time tw is believed to be independent of Ty and inversely proportional to Z4, where Z is the atomic number. An analysis by Fukuyama and Hoshino (1981) shows that Ac depends on and leads to a behaviour as shown in Fig. 1.24. The negative part should be observed only for heavy metals. 

Si P or Si As to the Z dependence. Their results are illustrated in Fig. 5.12. Kaveh and Mott introduce the spin-orbit scattering time and a new length scale Lso=(Dtso)1/2, and the Kawabata equation (9) becomes... 

An experiment to measure the asymmetry as a function of applied magnetic field at different values of strain was set up by Sun and O Handley (1991). It is shown in fig. 7. From the measured asymmetric spin-orbit scattering, A, the surface magnetisation, Afsurf is determined as... 

TIT, reduced temperature Ka spin-orbit scattering parameter... 

Yafet (1963) calculated the relaxation of the conduction electrons to the lattice <5 l due to spin-orbit scattering. Set can be separated into (intrinsic) and S eB-X. Hereby x denotes the concentration of the extrinsic scattereis. Has awa (1959) analyzed the situation which is shown in fig. 1 by Bloch-type equations. In this scenario the paramagnetic ions are... 

Fig. 5. Upper critical field H 2 vs temperature for the compound YbBa2Cu307 j,. The solid lines are based on standard WHH (Werthamer et al. 1966) theory for a conventional type II superconductor in the limits of maximum (spin-orbit scattering parameter As = 0) and minimum (A5 =oo) paramagnetic limitation and have been fitted to the data near T. Inset Normalized electrical resistivity vs temperature in several magnetic fields between 0 and 9 tesla. From Markert et al. (1989a).

Ten Bosch (1973) examined the effects of spin-orbit scattering on R, obtaining two spin-orbit-dependent terms one was due to an additional transverse current, and the other due to a transverse polarization. Numerical estimates indicated that these anomalous contributions could result in Rj >0. Ballentine and Hubermann (1977) suggest, however, that these two contributions may in fact be a single effect, appearing in two different guises, and therefore should not be summed. 

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