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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/14320

Title: スピン波熱移送の制御と冷却効果の観測
Other Titles: Control of spin-wave heat conveyer effect and observation of cooling effect
Authors: An, Toshu
Authors(alternative): 安, 東秀
Keywords: スピンエレクトロニクス
Issue Date: 13-Jun-2017
Abstract: 先ず、スピン波熱移送効果の原理の解明に取り組み、イットリウム鉄ガーネット(YIG)磁性体試料において励起スピン波の周波数依存性を観測した。励起スピン波において、低周波数では試料端でのスピン波熱移送効果が観測されるが、高周波数ではより試料内側に効果がシフトして観測されることを明らかにした。続いてスピンホール効果によるスピン波熱移送効果の制御を試みた。YIG試料上に製膜されたプラチナ薄膜やタングステン薄膜へ電流を印加し、スピンホール効果によるスピン注入による熱移送量の変調に起因する可能性のある温度の変調信号を赤外線カメラにより観測することに成功した。:First, spin wave heat conveyer effect was investigated on an yttrium iron garnet (YIG) sample as a function of excited spin-wave frequencies. At lower frequency the heat conveyer effect was observed localized at the sample end. At higher frequency, the effect was observed shift to inner position from the sample end. Second, spin transfer torque was applied to spin waves by spin Hall effect through the Pt and/or W film evaporated on the YIG sample by flowing a current. The modulated spin-wave heat conveyer effect was observed at the sample end by using infrared camera. This observed effect is possible to be originated from spin Hall effect.
Description: 基盤研究(B)(一般)
Language: jpn
URI: http://hdl.handle.net/10119/14320
Appears in Collections:平成28年度 (FY 2016)

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