Sensing the Spin of an Individual Ce Adatom.
- Ternes M RWTH Aachen University, Institute of Physics, D-52074 Aachen, Germany.
- Lutz CP IBM Almaden Research Center, San Jose, California 95120, USA.
- Heinrich AJ Center for Quantum Nanoscience, Institute for Basic Science (IBS), Seoul 03760, Republic of Korea.
- Schneider WD Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut de Physique, CH-1015 Lausanne, Switzerland.
- 2020-05-09
Published in:
- Physical review letters. - 2020
English
The magnetic moment of rare earth elements originates from electrons in the partially filled 4f orbitals. Accessing this moment electrically by scanning tunneling spectroscopy is hampered by shielding of outerlying orbitals. Here, we show that we can detect the magnetic moment of an individual Ce atom adsorbed on a Cu_{2}N ultrathin film on Cu(100) by using a sensor tip that has its apex functionalized with a Kondo screened spin system. We calibrate the sensor tip by deliberately coupling it to a well characterized Fe atom. Subsequently, we use the splitting of the tip's Kondo resonance when approaching a spectroscopically dark Ce atom to sense its magnetic moment.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.124.167202
- PMID 32383899
- Persistent URL
- https://sonar.ch/global/documents/99478
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