Inelastic x-ray scattering study of the metal-antiferromagnetic insulator transition in V2O3

被引：31

作者：

Isaacs, ED ^{[1
]}

Platzman, PM ^{[1
]}

Metcalf, P ^{[1
]}

Honig, JM ^{[1
]}

机构：

[1] PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.76.4211

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use inelastic x-ray scattering to study changes in the electronic excitation spectrum due to the metal-to-antiferromagnetic insulator transition in V2O3. The spectra reveal three principal features- a plasmonlike excitation at an energy loss of 12 eV which disperses with momentum transfer, a nondispersive peak at 9.2 eV, and a shoulder near 2 eV that appears only in the antiferromagnetic insulator phase. The 9.2 eV peak can be associated with a new type of valence band exciton, while the low energy shoulder is consistent with the opening up of a Hubbard gap.

引用

页码：4211 / 4214

页数：4

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