期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.147601
关键词
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资金
- ARO [W911NF-12-1-0085]
- NSF [DMR-1066158]
- The Office of Basic Energy Sciences [ER-46612]
- ONR [N00014-11-1-0384, N00014-12-1-1034]
- MINECO-Spain [MAT2010-18113, CSD2007-00041]
Using a first-principles-based effective Hamiltonian within molecular dynamics simulations, we discover that applying an electric field that is opposite to the initial direction of the polarization results in a switching of both the polarization and the magnetic chirality vector of multiferroic BiFeO3 at an ultrafast pace (namely, of the order of picoseconds). We discuss the origin of such a double ultrafast switching, which is found to involve original intermediate magnetic states and may hold promise for designing various devices.
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