NMR study of B‐2 p  Fermi‐level density of states in the transition metal diborides | Zendy

Lue C. S. | Zendy; Lai W. J. | Zendy

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NMR study of B‐2 p Fermi‐level density of states in the transition metal diborides

Author(s) -

Lue C. S.,

Lai W. J.

Publication year - 2005

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200402136

Subject(s) - fermi level , transition metal , fermi gamma ray space telescope , condensed matter physics , density of states , chemistry , relaxation (psychology) , lattice (music) , metal , electron , atomic physics , crystallography , physics , nuclear physics , psychology , social psychology , organic chemistry , acoustics , catalysis , biochemistry

We present a systematic study of the AlB 2 ‐type transition metal diborides by measuring the 11 B NMR spin‐lattice relaxation rate on TiB 2 , VB 2 , ZrB 2 , NbB 2 , HfB 2 , as well as TaB 2 . For all studied materials, the observed relaxation at B nuclei is mainly due to the p ‐electrons. The comparison with theoretical calculations allows the experimental determination of the partial B‐2 p Fermi‐level density of states (DOS). In addition, the extracted B‐2 p Fermi‐level DOS values in TiB 2 , ZrB 2 , and HfB are consistently smaller than in VB 2 , NbB 2 , and TaB 2 . We connect this trend to the rigid‐band scenario raised by band structure calculations. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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