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- Title
Laser-modulated RKKY interaction in two-dimensional metals.
- Authors
Feng, Peng; Tang, Xiaolong
- Abstract
The conduction electrons can deliver an indirect exchange interaction, namely the RKKY interaction, between impurities dissolved in nonmagnetic metal hosts by the interaction between the conduction electron spins and localized impurity spins. The effect of the laser field on the RKKY interaction between two localized spins in two-dimensional metals is studied by a quantum theory in this paper. The calculation results indicate an intense laser field can effectively manipulate this kind of indirect exchange interaction. The threshold of field strength for achieving this effect is given, and the exchange integrals at different impurity separations and laser field strengths are exhibited. It is discussed that both the finite spatial extension of the interaction potential and thermal energy of irradiation with a laser can influence the RKKY interaction.
- Subjects
LASER-modified scattering; LASERS; MAGNETIC impurities; METALS; NONMAGNETIC steel
- Publication
Physica Status Solidi (B), 2014, Vol 251, Issue 1, p190
- ISSN
0370-1972
- Publication type
Article
- DOI
10.1002/pssb.201350007