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  Spin-Resolved Spectroscopy of the Yu-Shiba-Rusinov States of Individual Atoms

Cornils, L., Kamlapure, A., Zhou, L., Pradhan, S., Khajetoorians, A., Fransson, J., et al. (2017). Spin-Resolved Spectroscopy of the Yu-Shiba-Rusinov States of Individual Atoms. Physical Review Letters, 119(19): 197002.

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 Creators:
Cornils, L., Author
Kamlapure, A., Author
Zhou, L.1, Author           
Pradhan, S., Author
Khajetoorians, A., Author
Fransson, J., Author
Wiebe, J., Author
Wiesendanger, R., Author
Affiliations:
1Department Quantum Materials (Hidenori Takagi), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370487              

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 Abstract: A magnetic atom in a superconducting host induces so-called Yu-Shiba-Rusinov (YSR) bound states inside the superconducting energy gap. By combining spin-resolved scanning tunneling spectroscopy with simulations we demonstrate that the pair of peaks associated with the YSR states of an individual Fe atom coupled to an oxygen-reconstructed Ta surface gets spin polarized in an external magnetic field. As theoretically predicted, the electron and hole parts of the YSR states have opposite signs of spin polarizations which keep their spin character when crossing the Fermi level through the quantum phase transition. The simulation of a YSR state right at the Fermi level reveals zero spin polarization which can be used to distinguish such states from Majorana zero modes in chains of YSR atoms.

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Language(s): eng - English
 Dates: 2017
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 735108
ISI: 000414743000011
 Degree: -

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Title: Physical Review Letters
Source Genre: Journal
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Publ. Info: COLLEGE PK : AMER PHYSICAL SOC
Pages: - Volume / Issue: 119 (19) Sequence Number: 197002 Start / End Page: - Identifier: ISSN: 0031-9007