|Title||Spin wave differential circuit for realization of thermally stable magnonic sensors|
|Publication Type||Journal Article|
|Year of Publication||2015|
|Authors||Goto, T, Kanazawa, N, Buyandalai, A, Takagi, H, Nakamura, Y, Okajima, S, Hasegawa, T, Granovsky, AB, Sekiguchi, K, Ross, CA, Inoue, M|
|Journal||Applied Physics Letters|
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.