Abstract
Since the invention of the Scanning Tunneling Microscope (STM) [4.1] the question arose whether this technique, besides its ability to probe the Local Electronic Density of States (LDOS) [4.2], can also be made sensitive to the electron spin, thus offering the opportunity to study magnetic structures down to the atomic scale. Spin-polarized tunneling was already discovered in the seventies when planar tunnel junctions, either ferromagnetoxide-superconductor [4.3] or ferromagnet-semiconductor-ferromagnet junctions [4.4], were studied. However, it took until 1990 for the first successful demonstration of vacuum tunneling of spin-polarized electrons with the STM [4.5].KeywordsSpin PolarizationTunnel JunctionTunneling CurrentScan Thnneling Microscope ImageTunnel BarrierThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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