title: Control of the Oscillatory Interlayer Exchange Interaction with Terahertz Radiation.
abstract: The oscillatory interlayer exchange interaction between two magnetic layers separated by a metallic spacer is one of the few coherent quantum phenomena that persists at room temperature. Here, we show that this interaction can be controlled dynamically by illuminating the sample (e.g., a spin valve) with radiation in the 10-100 THz range. We predict that the exchange interaction can be changed from ferromagnetic to antiferromagnetic (and vice versa) by tuning the amplitude and/or the frequency of the radiation. Our chief theoretical result is an expression that relates the dynamical exchange interaction to the static one that has already been extensively measured.
authors.affiliation: University Grenoble Alpes, INAC-PHELIQS, F-38000 Grenoble, France.|CEA, INAC-PHELIQS, F-38000 Grenoble, France.
authors.forename: Uta
authors.initials: U
authors.lastname: Meyer
authors.affiliation: University Grenoble Alpes, INAC-PHELIQS, F-38000 Grenoble, France.|CEA, INAC-PHELIQS, F-38000 Grenoble, France.
authors.forename: Géraldine
authors.initials: G
authors.lastname: Haack
authors.affiliation: University Grenoble Alpes, INAC-PHELIQS, F-38000 Grenoble, France.|CEA, INAC-PHELIQS, F-38000 Grenoble, France.
authors.forename: Christoph
authors.initials: C
authors.lastname: Groth
authors.affiliation: University Grenoble Alpes, INAC-PHELIQS, F-38000 Grenoble, France.|CEA, INAC-PHELIQS, F-38000 Grenoble, France.
authors.forename: Xavier
authors.initials: X
authors.lastname: Waintal