The Ruderman-Kittel-Kasuya-Yosida interaction (RKKY interaction, after Malvin Avram Ruderman , Charles Kittel , Tadao Kasuya and Kei Yosida) describes the indirect exchange between the localized magnetic moments of the atoms of a metal . The coupling of the magnetic moments takes place via the polarization of the spin of the conduction electrons .
In simplified terms , one could imagine this as follows: if an electron comes near a magnetic atom, it aligns its spin with it. If the electron now moves further through the solid, the spin polarization of the electron can in turn bring about an alignment of the magnetic moment of one of the next atoms.
- MA Ruderman, C. Kittel: Indirect Exchange Coupling of Nuclear Magnetic Moments by Conduction Electrons . In: Physical Review . tape 96 , no. 1 , October 1, 1954, p. 99-102 , doi : 10.1103 / PhysRev.96.99 .
- Tadao Kasuya: A Theory of Metallic Ferro- and Antiferromagnetism on Zener's Model . In: Progress of Theoretical Physics . tape 16 , no. 1 , 1956, pp. 45-57 , doi : 10.1143 / PTP.16.45 .
- Kei Yosida: Magnetic Properties of Cu-Mn Alloys . In: Physical Review . tape 106 , no. 5 , June 1, 1957, pp. 893-898 , doi : 10.1103 / PhysRev.106.893 .