Competing magnetic phases and fluctuation-driven scalar spin chirality in the kagome metal YMn<sub>6</sub>Sn<sub>6</sub> [electronic resource]
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| Format: | Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2020.
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| Abstract: | Identification, understanding, and manipulation of novel magnetic textures are essential for the discovery of new quantum materials for future spin-based electronic devices. In particular, materials that manifest a large response to external stimuli such as a magnetic field are subject to intense investigation. Here, we study the kagome-net magnet YMn<sub>6</sub>Sn<sub>6</sub> by magnetometry, transport, and neutron diffraction measurements combined with first-principles calculations. We identify a number of nontrivial magnetic phases, explain their microscopic nature, and demonstrate that one of them hosts a large topological Hall effect (THE). We propose a previously unidentified fluctuation-driven mechanism, which leads to the THE at elevated temperatures. This interesting physics comes from parametrically frustrated interplanar exchange interactions that trigger strong magnetic fluctuations. Our results pave a path to chiral spin textures, promising for novel spintronics. |
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| Item Description: | Published through Scitech Connect. 12/18/2020. "Journal ID: ISSN 2375-2548." Ghimire, Nirmal J. ; Dally, Rebecca L. ; Poudel, L. ; Jones, D. C. ; Michel, D. ; Magar, N. Thapa ; Bleuel, M. ; McGuire, Michael A. ; Jiang, J. S. ; Mitchell, J. F. ; et al; George Mason Univ., Fairfax, VA (United States) |
| Physical Description: | Size: Article No. eabe2680 : digital, PDF file. |