Paramagnetic spin pumping

Abstract

We have demonstrated spin pumping from a paramagnetic state of an insulator La2NiMnO6 into a Pt film. Single-crystalline films of La2NiMnO6 which exhibit a ferromagnetic order at TC ~ 270 K were grown by pulsed laser deposition. The inverse spin Hall voltage induced by spin-current injection has been observed in the Pt layer not only in the ferromagnetic phase of La2NiMnO6 but also in a wide temperature range above TC. The efficient spin pumping in the paramagnetic phase is ascribable to ferromagnetic correlation, not to ferromagnetic order.

Phys. Rev. Lett. Editors' suggestion

References in corpus (8)

• Spin Hall Magnetoresistance Induced by a Non-Equilibrium Proximity Effect
• Quantifying spin Hall angles from spin pumping: Experiments and Theory
• Spin pumping by parametrically excited exchange magnons
• Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet
• Inverse Spin Hall Effect in nanometer-thick YIG/Pt system
• Observation of the spin Peltier effect
• Platinum thickness dependence of the inverse spin-Hall voltage from spin pumping in a hybrid YIG/Pt system
• Temporal behavior of the inverse spin Hall voltage in a magnetic insulator-nonmagnetic metal structure

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