SPECTRAL WEIGHT TRANSFER AND MASS RENORMALIZATION IN MOTT-HUBBARD SYSTEMS SRVO3 AND CAVO3 - INFLUENCE OF LONG-RANGE COULOMB INTERACTION

被引：120

作者：

MORIKAWA, K

MIZOKAWA, T

KOBAYASHI, K

FUJIMORI, A

EISAKI, H

UCHIDA, S

IGA, F

NISHIHARA, Y

机构：

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

[2] ELECTROTECH LAB, TSUKUBA, IBARAKI 305, JAPAN

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.52.13711

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied metallic SrVO3 and CaVO3 by inverse photoemission and high-resolution photoemission. In going from Sr to Ca, considerable spectral weight is transferred from the coherent band to the upper and lower Hubbard bands. Meanwhile, the overall intensity rather than the width of the coherent band decreases, implying that the bandwidth remains finite as the system approaches the Mott transition. The result implies that the effect of long-range Coulomb interaction as well as short-range interaction becomes increasingly important towards the transition.

引用

页码：13711 / 13714

页数：4

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