@article{07ee90daf3b449879f5817b76e752355,
title = "Magnetic remanence in single atoms",
abstract = "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.",
author = "F. Donati and S. Rusponi and S. Stepanow and C. W{\"a}ckerlin and A. Singha and L. Persichetti and R. Baltic and K. Diller and F. Patthey and E. Fernandes and J. Dreiser and {\v S}ljivan{\v c}anin and K. Kummer and C. Nistor and P. Gambardella and H. Brune",
note = "Funding Information: Funding from the Swiss National Science Foundation (grants 200021-153404, 200020-157081, 200021-146715, PZ00P2 142474, and IZ73Z0-152406) and the Swiss Competence Centre for Materials Science and Technology (CCMX) is gratefully acknowledged. L.P. was supported by an ETH Postdoctoral Fellowship (FEL-42 13-2). K.D. acknowledges support from the {"}EPFL Fellows{"} fellowship program cofunded by Marie Curie, FP7 grant agreement no. 291771. Z.S. was supported by the Serbian Ministry of Education and Science under grants ON171033 and ON171017. The DFT calculations were performed at the PARADOX-IV supercomputer at the Scientific Computing Laboratory (SCL) of the Institute of Physics Belgrade. The XMCD experiments were performed at the EPFL-PSI X-Treme beamline of the Swiss Light Source (SLS) and the ID32 beamline of the European Synchrotron Radiation Facility (ESRF). The authors declare that they have no competing financial interests. Publisher Copyright: {\textcopyright} 2016, American Association for the Advancement of Science. All rights reserved.",
year = "2016",
month = apr,
day = "15",
doi = "10.1126/science.aad9898",
language = "English",
volume = "352",
pages = "318--321",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6283",
}