Thermal control of the magnon-photon coupling in a notch filter coupled to a yttrium iron garnet/platinum system

Vincent Castel (1, 2) , Rodolphe Jeunehomme (2) , Jamal Ben Youssef (3, 4) , Nicolas Vukadinovic (5) , Alexandre Manchec (6) , Fasil Kidane Dejene (7) , Gerrit E. W. Bauer (8, 9)

1 Lab-STICC_IMTA_MOM_DIM
2 IMT Atlantique - MO - Département Micro-Ondes
3 Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
4 UBO - Université de Brest
5 Dassault Aviation
6 Elliptika
7 MPI-HALLE - Max-Planck-Institut für Mikrostrukturphysik
8 WPI-AIMR - WPI Advanced Institute for Materials Research
9 Zernike Institute for Advanced Materials

We report thermal control of mode hybridization between the ferromagnetic resonance and a planar resonator (notch filter) working at 4.74 GHz. The chosen magnetic material is a ferrimagnetic insulator (yttrium iron garnet: YIG) covered by 6 nm of platinum (Pt). A current-induced heating method has been used in order to enhance the temperature of the YIG/Pt system. The device permits us to control the transmission spectra and the magnon-photon coupling strength at room temperature. These experimental findings reveal a potentially applicable tunable microwave filtering function.

Domaines: Matière Condensée [cond-mat]; Electronique

Vincent Castel, Rodolphe Jeunehomme, Jamal Ben Youssef, Nicolas Vukadinovic, Alexandre Manchec, et al.. Thermal control of the magnon-photon coupling in a notch filter coupled to a yttrium iron garnet/platinum system. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (6), pp.064407-064412. ⟨10.1103/PhysRevB.96.064407⟩. ⟨hal-01630013⟩