Regensburg 2016 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 7: SKM Dissertation-Prize 2016

DY 7.1: Hauptvortrag

Montag, 7. März 2016, 10:30–10:55, H2

Parallel pumping: Novel means of spin-wave manipulation on the micro-scale — •Thomas Brächer — Univ. Grenoble Alpes, CNRS, CEA, INAC-SPINTEC, 17, rue des Martyrs 38054, Grenoble, France — Fachbereich Physik and Landesforschungszentrum OPTIMAS, TU Kaiserslautern, 67663 Kaiserslautern, Germany

Spin waves and magnons, their quanta, are highly promising candidates for the realization of a wave-based logic beyond CMOS, which transmits information in the form of amplitude and phase of spin waves. In this context, the amplification of spin waves is a central issue. Parallel pumping, i.e., the conversion of microwave photons into pairs of magnons at half the microwave frequency, is a versatile technique to realize frequency-selective generation and amplification of spin waves. I studied these effects in microstructured spin-wave waveguides of various geometries, proving its applicability on the micro-scale. Moreover, I demonstrated that beyond a mere amplification, parallel pumping can also be used to perform logic operations in the spin-wave system.