期刊
NATURE MATERIALS
卷 15, 期 5, 页码 501-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NMAT4593
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资金
- US Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES) [DE-SC0012371]
- Office of Science, Office of Basic Energy Sciences, Scientific User Facilities Division, of the US Department of Energy [DE-AC02-05-CH11231]
- Leading Foreign Research Institute Recruitment Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology (MEST) [2012K1A4A3053565]
- Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the US Department of Energy [DE-AC02-05-CH11231]
- C-SPIN, one of the six SRC STARnet Centers - MARCO
- DARPA
- DFG
- Graduate School of Excellence Materials Science in Mainz (MAINZ) [GSC 266]
- EU [ERC-2007-StG 208162, FP7-PEOPLE-2013-ITN 608031, FP7-ICT-2009-5]
- MOGON (ZDV Mainz computing centre)
- Research Center of Innovative and Emerging Materials at Johannes Gutenberg University (CINEMA)
- Carl-Zeiss-Foundation
- Graduate School of Excellence Materials Science in Mainz (MAINZ)
- Kwanjeong Foundation
- NSF
- National Research Foundation of Korea [2012K1A4A3053565] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- U.S. Department of Energy (DOE) [DE-SC0012371] Funding Source: U.S. Department of Energy (DOE)
Magnetic skyrmions(1,2) are topologically protected spin textures that exhibit fascinating physical behaviours(1-6) and large potential in highly energy-efficient spintronic device applications(7-13). The main obstacles so far are that skyrmions have been observed in only a few exotic materials and at low temperatures(1-4,6-8), and fast current-driven motion of individual skyrmions has not yet been achieved. Here, we report the observation of stable magnetic skyrmions at room temperature in ultrathin transition metal ferromagnets with magnetic transmission soft X-ray microscopy. We demonstrate the ability to generate stable skyrmion lattices and drive trains of individual skyrmions by short current pulses along a magnetic racetrack at speeds exceeding 100m s(-1) as required for applications. Our findings provide experimental evidence of recent predictions(10-13) and open the door to room-temperature skyrmion spintronics in robust thin-film heterostructures.
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