Spin wave differential circuit for realization of thermally stable magnonic sensors

TitleSpin wave differential circuit for realization of thermally stable magnonic sensors
Publication TypeJournal Article
Year of Publication2015
AuthorsGoto, T, Kanazawa, N, Buyandalai, A, Takagi, H, Nakamura, Y, Okajima, S, Hasegawa, T, Granovsky, AB, Sekiguchi, K, Ross, CA, Inoue, M
JournalApplied Physics Letters
Volume106
Issue13
Pagination132412
Date Published2015/03/30/
Abstract

A magnetic-field sensor with a high sensitivity of 38 pT/Hz was demonstrated. By utilizing a spin-wave differential circuit (SWDC) using two yttrium iron garnet (YIG) films, the temperature sensitivity was suppressed, and the thermal stability of the phase of the spin waves was -0.0095 degrees K-1, which is three orders of magnitude better than a simple YIG-based sensor, similar to 20 degrees K-1. The SWDC architecture opens the way to design YIG-based magnonic devices. (C) 2015 AIP Publishing LLC.