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Surface and electronic structure of SmB6 through scanning tunneling microscopy

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Rößler,  S.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Jiao,  Lin
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126843

Seiro,  S.
Silvia Seiro, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons39185

Rasim,  Karsten
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126861

Steglich,  F.
Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126881

Tjeng,  L. H.
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126910

Wirth,  S.
Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Rößler, S., Jiao, L., Kim, D. J., Seiro, S., Rasim, K., Steglich, F., et al. (2016). Surface and electronic structure of SmB6 through scanning tunneling microscopy. Philosophical Magazine Letters, 96, 3262-3273. doi:10.1080/14786435.2016.1171414.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-1006-6
Abstract
SmB6, a so-called Kondo insulator, is recently discussed as a candidate material for a strong topological insulator. We present detailed atomically resolved topographic information on the (0 0 1) surface from more than a dozen SmB6 samples. Atomically flat, in situ cleaved surfaces often exhibit B-and Sm-terminated surfaces as well as reconstructed and non-reconstructed areas coexisting on different length scales. The terminations are unambiguously identified. In addition, electronic inhomogeneities are observed which likely result from the polar nature of the (0 0 1) surface and may indicate an inhomogeneous Sm valence at the surface of SmB6. In addition, atomically resolved topographies on a (1 1 0) surface are discussed.