000218780 001__ 218780 000218780 005__ 20190507143828.0 000218780 0247_ $$2doi$$a10.1038/ncomms11255 000218780 022__ $$a2041-1723 000218780 02470 $$2ISI$$a000373828500001 000218780 037__ $$aARTICLE 000218780 245__ $$aApproaching soft X-ray wavelengths in nanomagnet-based microwave technology 000218780 260__ $$bNature Publishing Group$$c2016$$aLondon 000218780 269__ $$a2016 000218780 300__ $$a7 000218780 336__ $$aJournal Articles 000218780 500__ $$aOpen Access 000218780 520__ $$aSeven decades after the discovery of collective spin excitations in microwave-irradiated ferromagnets, there has been a rebirth of magnonics. However, magnetic nanodevices will enable smart GHz-to-THz devices at low power consumption only, if such spin waves (magnons) are generated and manipulated on the sub-100 nm scale. Here we show how magnons with a wavelength of a few 10 nm are exploited by combining the functionality of insulating yttrium iron garnet and nanodisks from different ferromagnets. We demonstrate magnonic devices at wavelengths of 88 nm written/read by conventional coplanar waveguides. Our microwave-to-magnon transducers are reconfigurable and thereby provide additional functionalities. The results pave the way for a multi-functional GHz technology with unprecedented miniaturization exploiting nanoscale wavelengths that are otherwise relevant for soft X-rays. Nanomagnonics integrated with broadband microwave circuitry offer applications that are wide ranging, from nanoscale microwave components to nonlinear data processing, image reconstruction and wave-based logic. 000218780 6531_ $$amagnonics 000218780 6531_ $$amicrowaves 000218780 6531_ $$aspin dynamics 000218780 6531_ $$aferromagnetic resonance 000218780 6531_ $$agrating coupler 000218780 6531_ $$ananomagnet 000218780 700__ $$g180857$$0243923$$aYu, Haiming 000218780 700__ $$aD’ Allivy Kelly, O. 000218780 700__ $$aCros, V. 000218780 700__ $$aBernard, R. 000218780 700__ $$aBortolotti, P. 000218780 700__ $$aAnane, A. 000218780 700__ $$aBrandl, F. 000218780 700__ $$aHeimbach, F. 000218780 700__ $$aGrundler, D. 000218780 773__ $$j7$$tNature Communications$$q11255 000218780 909C0 $$xU13021$$0252534$$pLMGN 000218780 909CO $$pSTI$$particle$$ooai:infoscience.tind.io:218780 000218780 917Z8 $$x212341 000218780 937__ $$aEPFL-ARTICLE-218780 000218780 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL 000218780 980__ $$aARTICLE