期刊
NANO LETTERS
卷 11, 期 10, 页码 4079-4082出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl201275q
关键词
Topological insulators; ferromagnetism; magnetic proximity effect; X-ray magnetic circular dichroism
类别
资金
- CNR-IOM
- NSF MRSEC [DMR-0819860]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [819860] Funding Source: National Science Foundation
Spin-based electronics in topological insulators (TIs) is favored by the long spin coherence(1,2) and consequently fault-tolerant information storage. Magnetically doped TIs are ferromagnetic up to 13 K,(3) well below any practical operating condition. Here we demonstrate that the long-range ferromagnetism at ambient temperature can be induced in Bi2-xMnxTe3 by the magnetic proximity effect through deposited Fe overlayer. This result opens a new path to interface-controlled ferromagnetism in TI-based spintronic devices.
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