title: Realizing all-spin-based logic operations atom by atom.
abstract: An ultimate goal of spintronic research is the realization of concepts for atomic-scale all-spin-based devices. We combined bottom-up atomic fabrication with spin-resolved scanning tunneling microscopy to construct and read out atomic-scale model systems performing logic operations. Our concept uses substrate-mediated indirect exchange coupling to achieve logical interconnection between individual atomic spins. Combined with spin frustration, this concept enables various logical operations between inputs, such as NOT and OR.
authors.affiliation: Institute of Applied Physics, Hamburg University, Jungiusstrasse 11, D-20355 Hamburg, Germany.
authors.forename: Alexander Ako
authors.initials: AA
authors.lastname: Khajetoorians
authors.forename: Jens
authors.initials: J
authors.lastname: Wiebe
authors.forename: Bruno
authors.initials: B
authors.lastname: Chilian
authors.forename: Roland
authors.initials: R
authors.lastname: Wiesendanger