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Nonlocally sensing the magnetic states of nanoscale antiferromagnets with an atomic spin sensor.
Yan, Shichao; Malavolti, Luigi; Burgess, Jacob A J; Droghetti, Andrea; Rubio, Angel; Loth, Sebastian.
Afiliação
  • Yan S; Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany.
  • Malavolti L; Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany.
  • Burgess JAJ; Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany.
  • Droghetti A; Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany.
  • Rubio A; Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany.
  • Loth S; Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany.
Sci Adv ; 3(5): e1603137, 2017 May.
Article em En | MEDLINE | ID: mdl-28560346
ABSTRACT
The ability to sense the magnetic state of individual magnetic nano-objects is a key capability for powerful applications ranging from readout of ultradense magnetic memory to the measurement of spins in complex structures with nanometer precision. Magnetic nano-objects require extremely sensitive sensors and detection methods. We create an atomic spin sensor consisting of three Fe atoms and show that it can detect nanoscale antiferromagnets through minute, surface-mediated magnetic interaction. Coupling, even to an object with no net spin and having vanishing dipolar stray field, modifies the transition matrix element between two spin states of the Fe atom-based spin sensor that changes the sensor's spin relaxation time. The sensor can detect nanoscale antiferromagnets at up to a 3-nm distance and achieves an energy resolution of 10 µeV, surpassing the thermal limit of conventional scanning probe spectroscopy. This scheme permits simultaneous sensing of multiple antiferromagnets with a single-spin sensor integrated onto the surface.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Adv Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Adv Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Alemanha