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Realization of an ultra-high magnetic field on a nano-scale

S. T. Chui·J. -T. Wang·Li Zhou·K. Esfarjani·Y. Kawazoe
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Abstract

In tunnel junctions of which at least one side is a ferromagnet, very large magnetic polarization change ($\approx 0.1 μ_B$) and splitting of the spin up and spin down Fermi energy ($\approx 0.1 eV$) can be created under steady state finite current conditions (bias voltage $\approx$ 1 volt). This is {\bf 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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S. T. Chui, J. -T. Wang, Li Zhou, K. Esfarjani, Y. Kawazoe. 2000-12-11. Realization of an ultra-high magnetic field on a nano-scale. https://arxiv.org/abs/cond-mat/0012186

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