Floquet Control of Indirect Exchange Interaction in Periodically Driven Two-Dimensional Electron Systems
Keyword(s):
Abstract We present a theory for the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction mediated by a two-dimensional (2D) electron system subjected to periodic driving. This is demonstrated for a 2D metal with two ferromagnetic chains deposited in parallel. Our calculations reveal new non-analytic features in the time-averaged spin susceptibility. For weak light-matter coupling, the RKKY interaction shows oscillations with a period tunable by the light amplitude and frequency. For stronger light-matter coupling, the interaction becomes non-oscillatory and remains purely ferromagnetic. Our findings open a path forward for realizing dynamic control of the indirect exchange interaction in two-dimensional magnetic structures.
1987 ◽
Vol 122
(6-7)
◽
pp. 361-366
◽
Keyword(s):
1980 ◽
Vol 41
(C5)
◽
pp. C5-289-C5-292
◽
2018 ◽
Vol 30
(4)
◽
pp. 045801
◽
1985 ◽
Vol 129
(2)
◽
pp. 625-629
◽
1995 ◽
Vol 139
(1-2)
◽
pp. 179-188
◽
Keyword(s):