Regensburg 2013 – wissenschaftliches Programm

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PV: Plenarvorträge

PV XIV

PV XIV: Plenarvortrag

Donnerstag, 14. März 2013, 08:30–09:15, H1

Magnonic Transport Phenomena — •Burkard Hillebrands — Fachbereich Physik and Landesforschungszentrum OPTIMAS, TU Kaiserslautern, 67663 Kaiserslautern, Germany

Magnons, the quanta of spin waves, the dynamic excitations of a magnetic material, can be used as spin and information carrier. The young field building on this concept is magnon spintronics. It supplements the now well established field of spintronics, where spin is used in addition to the charge of an electron to gain new functionality. A particular new subfield is insulator spintronics, where magnetic insulator materials, such as Yttrium Iron Garnet, are used for information processing using magnons with the particular benefit of reduced heat dissipation since there are no electric currents involved. And, furthermore, magnons carry energy or heat. Magnonic transport has been demonstrated over macroscopic distances up to several millimeters, and magnons can be detected via spin pumping and the inverse spin Hall effect in addition to conventional microwave techniques. This establishes the bridge between magnons and conventional electronics. I will give an introduction into magnon spintronics. Specifically I will address magnonic transport phenomena in the field of magnon caloritronics, where the interaction between magnons and temperature / a temperature gradient becomes predominant. Applications to magnon logics will be discussed.