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

Chin-Shan Lue; W. J. Lai

doi:10.1002/pssb.200402136

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

Chin-Shan Lue, W. J. Lai

Department of Physics

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

We present a systematic study of the AlB₂-type transition metal diborides by measuring the ¹¹B NMR spin-lattice relaxation rate on TiB₂, VB₂, ZrB₂, NbB₂, HfB ₂, as well as TaB₂. 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-2p Fermi-level density of states (DOS). In addition, the extracted B-2p Fermi-level DOS values in TiB₂, ZrB₂, and HfB ₂ are consistently smaller than in VB₂, NbB₂, and TaB₂. We connect this trend to the rigid-band scenario raised by band structure calculations.

Original language	English
Pages (from-to)	1108-1112
Number of pages	5
Journal	Physica Status Solidi (B) Basic Research
Volume	242
Issue number	5
DOIs	https://doi.org/10.1002/pssb.200402136
Publication status	Published - 2005 Apr 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1002/pssb.200402136

Cite this

@article{dd9712f093e84f448e4825d789d47ce1,

title = "NMR study of B-2p Fermi-level density of states in the transition metal diborides",

abstract = "We present a systematic study of the AlB2-type transition metal diborides by measuring the 11B NMR spin-lattice relaxation rate on TiB2, VB2, ZrB2, NbB2, HfB 2, as well as TaB2. 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-2p Fermi-level density of states (DOS). In addition, the extracted B-2p Fermi-level DOS values in TiB2, ZrB2, and HfB 2 are consistently smaller than in VB2, NbB2, and TaB2. We connect this trend to the rigid-band scenario raised by band structure calculations.",

author = "Chin-Shan Lue and Lai, {W. J.}",

year = "2005",

month = apr,

day = "1",

doi = "10.1002/pssb.200402136",

language = "English",

volume = "242",

pages = "1108--1112",

journal = "Physica Status Solidi (B) Basic Research",

issn = "0370-1972",

publisher = "Wiley-VCH Verlag",

number = "5",

}

TY - JOUR

T1 - NMR study of B-2p Fermi-level density of states in the transition metal diborides

AU - Lue, Chin-Shan

AU - Lai, W. J.

PY - 2005/4/1

Y1 - 2005/4/1

N2 - We present a systematic study of the AlB2-type transition metal diborides by measuring the 11B NMR spin-lattice relaxation rate on TiB2, VB2, ZrB2, NbB2, HfB 2, as well as TaB2. 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-2p Fermi-level density of states (DOS). In addition, the extracted B-2p Fermi-level DOS values in TiB2, ZrB2, and HfB 2 are consistently smaller than in VB2, NbB2, and TaB2. We connect this trend to the rigid-band scenario raised by band structure calculations.

AB - We present a systematic study of the AlB2-type transition metal diborides by measuring the 11B NMR spin-lattice relaxation rate on TiB2, VB2, ZrB2, NbB2, HfB 2, as well as TaB2. 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-2p Fermi-level density of states (DOS). In addition, the extracted B-2p Fermi-level DOS values in TiB2, ZrB2, and HfB 2 are consistently smaller than in VB2, NbB2, and TaB2. We connect this trend to the rigid-band scenario raised by band structure calculations.

UR - http://www.scopus.com/inward/record.url?scp=17544372414&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17544372414&partnerID=8YFLogxK

U2 - 10.1002/pssb.200402136

DO - 10.1002/pssb.200402136

M3 - Article

AN - SCOPUS:17544372414

SN - 0370-1972

VL - 242

SP - 1108

EP - 1112

JO - Physica Status Solidi (B) Basic Research

JF - Physica Status Solidi (B) Basic Research

IS - 5

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this