Phase-resolved electrical detection of coherently coupled magnonic devices
Abstract
We demonstrate the electrical detection of magnon–magnon hybrid dynamics in yttrium iron garnet/Permalloy (YIG/Py) thin film bilayer devices. Direct microwave current injection through the conductive Py layer excites the hybrid dynamics consisting of the uniform mode of Py and the first standing spin wave (n = 1) mode of YIG, which are coupled via interfacial exchange. Both the two hybrid modes, with Py- or YIG-dominated excitations, can be detected via the spin rectification signals from the conductive Py layer, providing phase resolution of the coupled dynamics. The phase characterization is also applied to a nonlocally excited Py device, revealing the additional phase shift due to the perpendicular Oersted field. Our results provide a device platform for exploring hybrid magnonic dynamics and probing their phases, which are crucial for implementing coherent information processing with magnon excitations.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 17, 2021
- Source ID
- 10.1063/5.0042784
Entities
People
- Axel Hoffmann
- Chenbo Zhao
- John Pearson
- Joseph Sklenar
- Mark D. Stiles
- Michael Vogel
- Ralu Divan
- Valentyn Novosad
- Vivek P. Amin
- Wei Zhang
- Yi Li
- Yuzan Xiong
- Zhizhi Zhang
Organizations
- Air Force Office of Scientific Research
- Argonne National Laboratory
- National Institute of Standards and Technology
- Oakland University
- Office of Basic Energy Sciences
- United States Department of Energy
- University of Illinois Urbana–Champaign
- University of Kassel
- University of Maryland
- Wayne State University