Journal article
Magnetic remanence in single atoms.
- Donati F Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland.
- Rusponi S Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland.
- Stepanow S Department of Materials, ETH Zürich, Hönggerbergring 64, CH-8093 Zürich, Switzerland.
- Wäckerlin C Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland.
- Singha A Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland.
- Persichetti L Department of Materials, ETH Zürich, Hönggerbergring 64, CH-8093 Zürich, Switzerland.
- Baltic R Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland.
- Diller K Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland.
- Patthey F Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland.
- Fernandes E Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland.
- Dreiser J Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland. Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
- Šljivančanin Ž Vinča Institute of Nuclear Sciences (020), Post Office Box 522, 11001 Belgrade, Serbia. Texas A&M University at Qatar, Doha, Qatar.
- Kummer K European Synchrotron Radiation Facility (ESRF), F-38043 Grenoble, France.
- Nistor C Department of Materials, ETH Zürich, Hönggerbergring 64, CH-8093 Zürich, Switzerland.
- Gambardella P Department of Materials, ETH Zürich, Hönggerbergring 64, CH-8093 Zürich, Switzerland. pietro.gambardella@mat.ethz.ch harald.brune@epfl.ch.
- Brune H Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 3, CH-1015 Lausanne, Switzerland. pietro.gambardella@mat.ethz.ch harald.brune@epfl.ch.
- 2016-04-16
Published in:
- Science (New York, N.Y.). - 2016
English
A permanent magnet retains a substantial fraction of its saturation magnetization in the absence of an external magnetic field. Realizing magnetic remanence in a single atom allows for storing and processing information in the smallest unit of matter. We show that individual holmium (Ho) atoms adsorbed on ultrathin MgO(100) layers on Ag(100) exhibit magnetic remanence up to a temperature of 30 kelvin and a relaxation time of 1500 seconds at 10 kelvin. This extraordinary stability is achieved by the realization of a symmetry-protected magnetic ground state and by decoupling the Ho spin from the underlying metal by a tunnel barrier.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1126/science.aad9898
- PMID 27081065
- Persistent URL
- https://sonar.ch/global/documents/181056
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