2018-01-012024-05-13https://scholars.lib.ntu.edu.tw/handle/123456789/651697摘要：最近自旋電子學領域受到反鐵磁材料研究的嶄新進展有了令人為之一振的刺激。雖然淨磁矩等於零的特性使反鐵磁體中的磁性無法輕易藉由外部的量測而探見，但在其微觀背後有各種有趣的性質和多變與重要的物理。最近基於自旋轉移與自旋軌道耦合的研究，幾個新的突破揭示了反鐵磁體可能對未來自旋電子學應用元件扮演極為重要的腳色，這都是因為反鐵磁特有的物理性質包括：淨磁矩等於零的特性導致沒有雜散場，且不敏感於外部磁場干擾，極快的自旋動力學和擁有強自旋軌道相互作用。然而目前所有和反鐵磁體相關的研究與應用還有相當多的挑戰，其中最重要的問題是如何操縱和檢測反鐵磁材料裡的自旋電子信息。由於我們在以熱來激發和操控電子自旋的研究方面有許多優秀的成果與豐富的經驗，在此計畫中，我們提出研究反鐵磁相關的熱自旋電子學。因為熱能可以是刺激反鐵磁高頻振動之自旋電流的最有效的方法。更具體地說，我們將研究自旋電流和自旋波自旋電流基於反鐵磁體的傳遞，產生和檢測。我們的方法將引導我們探索不同類型的反鐵磁材料: 包含反鐵磁金屬，反鐵磁合金與反鐵磁絕緣體，並研究與激發其快速的自旋動力學。我們相信這些研究主題與成果將會對「反鐵磁自旋電子學」此嶄新領域提供非常重要的貢獻，尤其是針對未來反鐵磁自旋電子學元件，提供重要的研究與應用基礎。<br> Abstract: Recently, the field of spintronics has been surprised by antiferromagnetic materials. Although the zero net magnetic moment makes magnetism in antiferromagnets externally invisible, there is a rich variety of interesting properties and physics behind it. Several new breakthroughs based on spin transfer reveals that antiferromagnets can represent the future of spintronic applications due to its intrinsic properties, including: no stray fields, insensitivity to disturbing magnetic fields, extremely fast dynamics, and strong spin-orbit interactions. Among all challenges to explore the spin state in antiferromagnets, one of the major problems is to manipulate and detect the spin information of an antiferromagnetic spintronic material. Motivated by our previous remarkable results on spin caloritronics, we propose to investigate antiferromagnetic spin(calori)tronics. The thermal energy could be one of the most efficient approachs to stimulating high frequency antiferromagnetic spin current. To be more specific, we will study the transmission, generation, and detection of spin current and spin-wave spin current based on antiferromagnets. Our approach will lead us to explore fast dynamics in different types of antiferromagnetic materials, ranging from metals to insulators. We believe these topics will provide an invaluable contribution and the fundamental basis for the new antiferromagnetic spintronics and beyond.反鐵磁自旋電子學熱自旋電子學自旋塞貝克效應自旋軌道耦合自旋霍爾效應自旋波自旋電流Antiferromagnetspintronicsspin caloritronicsspin Seebeck effectspin-orbit couplingspin Hall effectspin currentspin-wave spincurrent