【学术视频】第八届国际磁科学会议 | Yukako Fujishiro of University of Tokyo

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图 | Yukako Fujishiro

题   目：Emergent transport phenomena in topological spin textures revealed by high-magnetic-field measurements报告人：Yukako Fujishiro单   位：University of Tokyo, Japan时   间：2019-10-13地   点：中国科学院强磁场科学中心

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报告摘要

The interplay between topological spin textures and conduction electrons gives rise to emergent magnetic field which can be exploited for novel functionalities. One distinct example is a spin hedgehog lattice which shows various emergent transport phenomena (e.g. topological Hall effect, magneto-resistivity), whose magnitude are quite large compared to the conventional skyrmion systems. In the search for even more gigantic emergent responses from topological spin textures, further understandings of the unusual transport properties in the spin hedgehog lattice is of great importance. In this talk, we would like to report the high-magnetic-field study on the spin hedgehog lattice. In particular, we have discovered large magneto-Seebeck effect in MnGe, and also realized topological transitions between skyrmion- and hedgehog- lattice states in MnSi1-xGex. We would like to discuss the unusual magnetic fluctuations discovered at high-magnetic-field regime, as well as the possible formation mechanisms of the spin hedgehog lattice which is beyond the conventional paradigm based on the Dzyaloshinskii-Moriya interaction. This work is done in collaboration with The Institute of Solid State Physics (ISSP), Institute for Materials Research (IMR), and Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS).

个人简介

Yukako Fujishiro, she graduated from Kofu Minami High School (Yamanashi) in 2011; in Mar. 2016, she received B.S. in Dept. of Applied Physics at University of Tokyo; in Mar. 2018, she received M.S. in Dept. of Applied Physics at University of Tokyo; After that, She holds a Ph.D in Dept. of Applied Physics, Graduate School of Engineering at University of Tokyo, and is currently a JPSJ Research Fellow. Yukako Fujishiro discovered large thermoelectric effect of topological origin and demonstrated its mechanism with various investigations. She also clarified the transition between two different topological spin textures through neutron scattering experiment and high magnetic field measurement in a new solid solution she had created. The University of Tokyo evaluated her work as highly innovative for suggesting immense possibility of new physics at the "boundary" of magnetic phases with different topology, along with the publication in Nature Communications and many prizes she had received.

会议简介

第八届国际磁科学会议
2019年10月11日-14日，第八届国际磁科学会议在合肥成功举办。本次会议由中国科学院强磁场科学中心、中国科学院强磁场与离子束物理生物学重点实验室和西北工业大学生命学院空间生物实验模拟技术国防重点学科实验室主办，安徽大学物理与材料科学学院协办，并得到了中科院国际合作局的支持。强磁场条件下的科学研究涉及物理学、化学、材料科学、地球科学、生命科学与医学等众多学科。国际磁科学会议是国际上关于磁场下的材料和生命科学研究最有影响力的国际会议之一，吸引了全世界众多专家学者参与。
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