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The Fermi surface of a superconductor: OsB 2
Author(s) -
Hebbache M.
Publication year - 2009
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200903133
Subject(s) - fermi surface , condensed matter physics , superconductivity , osmium , materials science , surface (topology) , composite material , chemistry , physics , geometry , mathematics , biochemistry , ruthenium , catalysis
Osmium diboride has been known for some time as a low compressibility material and a superhard material. It is suitable for hard coating applications. It is also a superconductor below 2.1 K. Using first‐principles calculations, the author investigated the geometry of its Fermi surface (FS) and calculated the related physical quantities. The theoretical results are used to predict the frequencies of the Shubnikov–de Haas quantum oscillations. Comparison with recent measurements of the magneto‐resistance oscillations in osmium diboride is made.The picture shows the FS of OsB 2 consisting of three sheets: a pair of two nested ellipsoidal surfaces and a corrugated tubular surface. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)