Realization of an ultra-high magnetic field on a nano-scale
Chui, S. T. · Wang, J. -T. · Zhou, Li · Esfarjani, K. · Kawazoe, Y.
Original · EN
In tunnel junctions of which at least one side is a ferromagnet, very large magnetic polarization change (≈ 0.1 μB) and splitting of the spin up and spin down Fermi energy (≈ 0.1 eV) can be created under steady state finite current conditions (bias voltage ≈ 1 volt). This is much higher than can be created by the highest magnetic field on earth. We illustrate this with a specific calculation of a recently observed very large Hall effect in the Al side of a Co-I-Al tunnel junction. Other recent experiments that support this idea are discussed.
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