Soft-x-ray spectroscopy measurements of the p-like density of states of B in MgB2 and evidence for surface boron oxides on exposed surfaces -: art. no. 132504

被引：44

作者：

Callcott, TA ^{[1
]}

Lin, L

Woods, GT

Zhang, GP

Thompson, JR

Paranthaman, M

Ederer, DL

机构：

[1] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

[3] Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA

[4] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.64.132504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Soft-x-ray absorption and fluorescence measurements are reported for the K edge of B in MgB2. The measurements confirm a high density of B p(xy)(sigma) states at the Fermi edge and extending to approximately 0.9 eV above the edge. A strong resonance is observed in elastic scattering through a core exciton derived from out-of-plane p(z)(pi*) states. Another strong resonance, observed in both elastic and inelastic spectra, is identified as a product of surface boron oxides.

引用

页数：3