「Skyrmions and their future potential applications」
David Schroeter 氏

Oct 27, 2017


講演題目: Skyrmions and their future potential applications
講 師 : David Schroeter 博士
     Tech. Univ. Braunschweig
日 時 : 平成29年10月27日 (金) 16:30-18:00
場 所 : 北海道大学 工学部 C206講義室

要 旨 :
Magnetic skyrmions are topological distinct spin textures, which have attracted significant interests in recent years due to their intriguing magnetic interactions and attractive attributes for spintronic applications. Their non-trivial topology and quasiparticle like behaviour is a source of rich and interesting physics. Furthermore due to their strong coupling to the conduction electrons it makes the field of skyrmionics interesting for extreme low-power information technologies. Data is envisioned to be encoded in topological charges instead of electronic charges as in conventional semiconducting devices. In my talk I will give an introduction and overview about the progress and current state of the field of skyrmions, focussing on the experimental realization of skyrmions, their detection and their manipulation methods. Furthermore I will give a brief overview of possible realizations of future skyrmionic technologies and will discuss some of the current challenges in this field. Specifically I will focus on the progenitor material MnSi in which skyrmions have first been discovered in 2009 and is since then being heavily investigated as a model compound for studies on skyrmions. Finally I will present our results of the investigation of thin film MnSi material, which in previous findings exhibits widely varying properties in particular with respect to electronic transport leading to the question about the existence of skyrmions in thin film samples. Then, starting from giving an overview of the optimization of the sample quality, I will present our results of nanostructuring and subsequent investigation of the transport properties with the goal of identifying skyrmionic signals via electrical means.

世話人  日高 宏之
北海道大学理学部物理学科 (電話011-706-3484)

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