Control of spin-wave heat conveyer effect and observation of cooling effect

2016 Fiscal Year Final Research Report

• Project/Area Number: 26286041
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Applied materials
• Research Institution: Japan Advanced Institute of Science and Technology (2015-2016); The Institute of Physical and Chemical Research (2014)
• Principal Investigator: AN TOSHU (安東秀) 北陸先端科学技術大学院大学, 先端科学技術研究科, 准教授 (70500031)
• Co-Investigator(Renkei-kenkyūsha): EIJI SAITOH 東北大学, 金属材料研究所, 教授 (80338251) ; KIM YOUSOO 独立行政法人理化学研究所, 主任研究員 (50373296)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: スピンエレクトロニクス / 熱工学 / 排熱利用 / エネルギー効率 / 磁性

Outline of Final Research Achievements

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.

Free Research Field

スピンエレクトロニクス