Effect of mean free path on the strength of the Ruderman-Kittel-Kasuya-Yoshida interaction in a dilute (Ag0.6Au0.4)Mn alloy
1978; Elsevier BV; Volume: 25; Issue: 5 Linguagem: Inglês
10.1016/0038-1098(78)90972-9
ISSN1879-2766
Autores Tópico(s)Magnetic Properties and Applications
ResumoAbstract From measurements of magnetic susceptibility from 1.2 to 200 K and magnetization (0–50 kG) from 1.2 to 4.2 K, the strength of the RKKY interaction between Mn spins in a Ag0.6Au0.4 + 810 ppm Mn alloy has been determined to be V0 = (2.4±0.5) x 10-37 erg cm3. It is shown that this value for V0 is consistent with an RKKY interaction strength which has has been reduced by mean free path effects by a factor exp (— 〈 r〉/l), where 〈 r 〉 is the average separation between Mn spins and l is the electron mean free path in the alloy.
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