Core electron spectroscopic studies of YNi2B2C

被引：3

作者：

Boske, T ^{[1
]}

Kielwein, M ^{[1
]}

Knupfer, M ^{[1
]}

Barman, SR ^{[1
]}

Behr, G ^{[1
]}

Buchgeister, M ^{[1
]}

Golden, MS ^{[1
]}

Fink, J ^{[1
]}

Singh, DJ ^{[1
]}

Pickett, WE ^{[1
]}

机构：

[1] USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375

来源：

SOLID STATE COMMUNICATIONS | 1996年 / 98卷 / 09期

关键词：

superconductors; electronic band structure; electron-electron correlation; electron energy loss spectroscopy; photoelectron spectroscopy;

D O I：

10.1016/0038-1098(96)00133-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High-energy electron energy-loss spectroscopy in transmission has been applied to obtain the absorption spectra at the B 1s, C 1s and Ni 2p(3/2) excitation edges of bulk polycrystalline YNi2B2C. We find a close similarity in the near-edge structures and confirm the strongly covalent character of the bonding between Ni, B and C. We compare our results to band structure calculations of the local unoccupied density of states generated within the local density approximation. From x-ray photoemission spectroscopy measurements we determine the core level binding energies and from a comparison of photoemission and Auger spectroscopic measurements we derive a value of the Ni d-d Coulomb energy U-A of about 4 eV. Copyright (C) 1996 Elsevier Science Ltd.

引用

页码：813 / 817

页数：5

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