EVOLUTION OF THE SPECTRAL-FUNCTION IN MOTT-HUBBARD SYSTEMS WITH D(1) CONFIGURATION

被引：238

作者：

FUJIMORI, A

HASE, I

NAMATAME, H

FUJISHIMA, Y

TOKURA, Y

EISAKI, H

UCHIDA, S

TAKEGAHARA, K

DEGROOT, FMF

机构：

[1] UNIV TOKYO,DEPT APPL PHYS,BUNKYO KU,TOKYO 113,JAPAN

[2] TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 980,JAPAN

[3] CATHOLIC UNIV NIJMEGEN,MAT RES INST,6525 ED NIJMEGEN,NETHERLANDS

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.69.1796

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the photoemission spectra of perovskite-type Ti3+ and V4+ oxides, which have formally the d1 configuration ranging from a Mott insulator to a paramagnetic metal. The results indicate that as the Mott-Hubbard gap closes, spectral weight is transferred from the upper and lower Hubbard bands to the region near the Fermi level with decreasing U/W (U, d-d Coulomb repulsion energy; W, one-electron d-band width), i.e., from the incoherent to the coherent part of the single-particle spectral function.

引用

页码：1796 / 1799

页数：4

共 22 条

[1] STRONGLY CORRELATED ELECTRONIC SYSTEMS WITH ONE HOLE - DYNAMIC PROPERTIES [J].