Abstract
The functionality of today's technology in magnetic hard disks or memories relies on tiny relativistic effects in electron behavior that were previously believed to be too small to be directly observed. Researchers visualize these effects, for the first time, by showing how the electronic structure of iron responds to the direction of a magnetic field.
Highlights
The electronic band structure near the Fermi level determines numerous vital properties of metallic materials, being responsible for their thermal, magnetic, and electronic transport behavior
Even though the surface states predicted by the calculation are not revealed in our experiment, the results presented in Figs. 4(a) and 4(b) reflect the influence of the magnetization direction on the symmetry of the electronic states when the translational symmetry of the system is broken by the presence of the surface
We have shown comprehensive angle-resolved photoemission spectroscopy (ARPES) data with clear modifications of the bulk electronic bands of Fe(001) in response to the remanent change of the magnetization direction
Summary
The electronic band structure near the Fermi level determines numerous vital properties of metallic materials, being responsible for their thermal, magnetic, and electronic transport behavior. The influence of the SOI on the electronic band structure of a ferromagnet is very subtle It causes the mixing of the spin character and a magnetization-dependent opening of minute energy gaps This effect, which occurs because of the opening or closing of the SOG for different magnetization directions of the electrode, was later termed tunneling anisotropic magnetoresistance (TAMR) [9]. It was demonstrated, first for the ferromagnetic (FM) semiconductor [9] and later for the conventional ferromagnet (Fe) [10], that thanks to TAMR it is possible to realize a spinvalve function using only one FM electrode. A theoretical treatment of the entire photoemission process was addressed using state-of-theart, one-step model photoemission calculations
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