Exchange magnon-polaritons in microwave cavities

Yunshan Cao, Peng Yan, Hans Huebl, Sebastian T. B. Goennenwein, and Gerrit E. W. Bauer

Phys. Rev. B 91, 094423 – Published 24 March 2015

Abstract

We formulate a scattering theory to study magnetic films in microwave cavities beyond the independent-spin and rotating-wave approximations of the Tavis-Cummings model. We demonstrate that strong coupling can be realized not only for the ferromagnetic resonance mode, but also for spin-wave resonances; the coupling strengths are mode dependent and decrease with increasing mode index. The strong-coupling regime can also be accessed electrically by spin pumping into a metal contact.

Received 18 December 2014
Revised 10 March 2015

DOI:https://doi.org/10.1103/PhysRevB.91.094423

Authors & Affiliations

Yunshan Cao¹, Peng Yan¹, Hans Huebl^2,3,4, Sebastian T. B. Goennenwein^2,3,4, and Gerrit E. W. Bauer^1,5

¹Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
²Walther-Meißner-Institute, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany
³Nanosystems Initiative Munich, D-80799 München, Germany
⁴Physik-Department, Technische Universität München, D-85748 Garching, Germany
⁵Institute for Materials Research and WPI-AIMR, Tohoku University, Sendai 980-8577, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 91, Iss. 9 — 1 March 2015

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review B

covering condensed matter and materials physics