Local spectroscopy of the Kondo lattice YbAl3: Seeing beyond the surface with 
scanning tunneling microscopy and spectroscopy

Wahl, P.; Diekhöner, L.; Schneider, M. A.; Treubel, F.; Lin, C. T.; Kern, K.

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Local spectroscopy of the Kondo lattice YbAl₃: Seeing beyond the surface with scanning tunneling microscopy and spectroscopy

Wahl, P., Diekhöner, L., Schneider, M. A., Treubel, F., Lin, C. T., & Kern, K. (2011). Local spectroscopy of the Kondo lattice YbAl₃: Seeing beyond the surface with scanning tunneling microscopy and spectroscopy. Physical Review B, 84(24): 245131.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-C069-3 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-C06A-2

Genre: Journal Article

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Creators:
Wahl, P.^{1, 2}, Author
Diekhöner, L.², Author
Schneider, M. A.², Author
Treubel, F., Author
Lin, C. T.³, Author
Kern, K.², Author

Affiliations:
1Former Research Groups, Max Planck Institute for Solid State Research, Max Planck Society, ou_3370500
2Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370481
3Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370496

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Abstract: We report on an atomic-scale study of the Kondo lattice compound YbAl(3) using scanning tunneling microscopy (STM) and spectroscopy (STS). An analysis of the surface orientation and structure is performed based on STM images containing more than one crystal facet. We compare tunneling spectra acquired on different facets and discuss their relation with the temperature scales observed in measurements of bulk quantities and the states observed in photoemission spectra. On specific facets, we observe strong additional resonances close to the Fermi energy which are not consistent with the characteristic energy scales found in bulk measurements, and which we interpret in terms of a modified Kondo state of the near-surface Ytterbium atoms.

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Language(s): eng - English

Dates: Date issued: 2011

Publication Status: Issued

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Identifiers: eDoc: 581042
ISI: 000298563100009

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Title: Physical Review B

Alternative Title : Phys. Rev. B

Source Genre: Journal

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Publ. Info: COLLEGE PK : AMER PHYSICAL SOC

Pages: - Volume / Issue: 84 (24) Sequence Number: 245131 Start / End Page: - Identifier: ISSN: 1098-0121