PerspectiveApplied Physics

Mirrors for Electrons

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Science  12 Mar 1999:
Vol. 283, Issue 5408, pp. 1655
DOI: 10.1126/science.283.5408.1655

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The trend toward ever smaller microelectronic devices requires increasingly precise control over their electronic properties on short length scales. In his Perspective, Himpsel discusses two recent papers that show how precise fabrication together with sensitive measurements now allow such control at the level of an atomic monolayer in tiny electron cavities. Such devices may help in developing the next generation of magnetoelectronic devices.