METAL-TO-INSULATOR TRANSITIONS IN CAVOY

被引：11

作者：

INOUE, IH

MORIKAWA, K

FUKUCHI, H

TSUJII, T

IGA, F

NISHIHARA, Y

机构：

[1] PERKIN ELMER JAPAN CO LTD,APPLICAT LAB,YOKOHAMA,KANAGAWA 220,JAPAN

[2] UNIV TOKYO,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)90863-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A metal-to-insulator transition in CaVO(y) by varying the oxygen stoichiometry is reported. Stoichiometric CaVO(y) (y=3.00) shows good metallic conductivity but slight oxidation (ycongruent-to3.05) causes the system to be insulating without any significant structural changes. This behavior is contrary to that seen in another d(l) system LaTiO(y), which is a Mott insulator for y=3.00 but becomes metallic by oxidation. We suggest that, in CaVO(y), oxygen defects primarily induce additional scattering which causes the metallic CaVO3 to be insulating rather than add extra carriers.

引用

页码：1067 / 1068

页数：2