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We show the directional excitation of Bloch surface waves controlled by the magnetic field of light. The phenomenon in play is the first magnetic spin-orbit interaction of light. It opens new degrees of freedom in the manipulation of light and offers appealing novel opportunities in the detection of the spin density of the magnetic optical field.
Ambrogio Fasoli, Basil Duval, Alexander Karpushov, Yanis Andrebe, Pierre Lavanchy, Matteo Vallar, Jesús Poley Sanjuán, Augustin Charles Roger Philippe Clément