Samarium hexaboride

Samarium hexaboride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.384 Edit this at Wikidata
EC Number
  • 234-536-3
  • InChI=1S/6B.Sm
    Key: IYKQPDWKORWUNW-UHFFFAOYSA-N
  • [B].[B].[B].[B].[B].[B].[Sm]
Properties
B6Sm
Molar mass 215.22 g·mol−1
Melting point 2400 °C ±100[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Samarium hexaboride (SmB6) is an intermediate-valence compound where samarium is present both as Sm2+ and Sm3+ ions at the ratio 3:7.[2] It is a Kondo insulator having a metallic surface state.[3]

  1. ^ Plenum Press Handbooks of High-Temperature Materials: No. 1 Materials Index p42
  2. ^ Nickerson, J.; White, R.; Lee, K.; Bachmann, R.; Geballe, T.; Hull, G. (1971). "Physical Properties of SmB6". Physical Review B. 3 (6): 2030. Bibcode:1971PhRvB...3.2030N. doi:10.1103/PhysRevB.3.2030.
  3. ^ Li, Lu; Sun, Kai; Kurdak, Cagliyan; Allen, J. W. (2020). "Emergent mystery in the Kondo insulator samarium hexaboride". Nature Reviews Physics. 2 (9): 463–479. Bibcode:2020NatRP...2..463L. doi:10.1038/s42254-020-0210-8. ISSN 2522-5820. OSTI 1649780. S2CID 257113116.