The 82nd JSAP Autumn Meeting 2021

Presentation information

Oral presentation

10 Spintronics and Magnetics » 10.2 Fundamental and exploratory device technologies for spin

[10a-S302-1~11] 10.2 Fundamental and exploratory device technologies for spin

Fri. Sep 10, 2021 9:00 AM - 12:00 PM S302 (Oral)

Kenji Tanabe(Toyota Technol. Inst.), Koji Sekiguchi(Yokohama Nat. Univ)

10:30 AM - 10:45 AM

[10a-S302-6] Modulation of Surface Spin-wave Heat Emission by DC Current Observed by Lock-in Thermography

〇(PC)Harish Kumar Choudhary1, Yuta Kainuma1, Kunitaka Hayashi1, Toshu An1 (1.JAIST)

Keywords:Spin waves, Lock-in Thermography, Spin caloritronics

Controlled propagation of spin waves (SWs) has exhibited potential applications in information transfer and processing. Various methods to modulate the SWs propagation via electric field, spin-orbit torque, and temperature gradient have been explored. The interplay between heat and SWs yields novel transport phenomena as the unidirectional heat conveyer effect in magnetostatic surface spin waves (MSSWs) was observed by lock-in thermography (LIT). Herein, we studied the modulation of heat emission in ferrimagnetic Y3Fe5O12 thin film upon applied current (Jc) pulse using the LIT technique. The heat emission due to MSSWs damping is modulated by pulsed current (Jc) applied to a thin Cu foil. By applying the current pulse with different polarities, we studied the effect of the local Oersted field generated from the applied Jc on the MSSWS propagation to control the heat emission using LIT.