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Cited by 317

The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.

Topological surface state in the Kondo insulator samarium hexaboride

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Kim, D. J., Xia, J., Fisk, Z.·2014·Nature Materials

Abstract

Topological invariants of electron wavefunctions in condensed matter reveal many intriguing phenomena. A notable example is provided by topological insulators, which are characterized by an insulating bulk coexisting with a metallic boundary state. Although there has been intense interest in Bi-based topological insulators, their behaviour is complicated by the presence of a considerable residual bulk conductivity. Theories predict that the Kondo insulator system SmB6, which is known to undergo a transition from a Kondo lattice metal to a small-gap insulator state with decreasing temperature, could be a topological insulator. Although the insulating bulk and metallic surface separation has been demonstrated in recent transport measurements, these have not demonstrated the topologically protected nature of the metallic surface state. Here we report thickness-dependent transport measurements on doped SmB6, and show that magnetic and non-magnetic doping results in contrasting behaviour that supports the conclusion that SmB6 shows virtually no residual bulk conductivity.

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Metadata

Authors
Kim, D. J., Xia, J., & Fisk, Z.
Venue
Nature Materials
Published
2014-03-23
Volume
13
Issue
5
Pages
466-470
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W2016647475
Cited by
317
References
23
FWCI
25.95
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Topological surface state in the Kondo insulator samarium hexaboride. https://app.cochat.ai/papers/10.1038/nmat3913
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Kim, D. J., Xia, J., & Fisk, Z. (2014). Topological surface state in the Kondo insulator samarium hexaboride. Nature Materials. https://doi.org/10.1038/nmat3913

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