BARELY METALLIC STATES WITH ENHANCED CARRIER MASS IN Y1-XCAXTIO3

被引：49

作者：

TOKURA, Y

TAGUCHI, Y

MORITOMO, Y

KUMAGAI, K

SUZUKI, T

IYE, Y

机构：

[1] HOKKAIDO UNIV,DEPT PHYS,SAPPORO,HOKKAIDO 060,JAPAN

[2] UNIV TOKYO,INST SOLID STATE PHYS,TOKYO 106,JAPAN

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.48.14063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the nominally hole-doped Mott insulator system Y1-xCaxTiO3, the metal-insulator transition takes place near x=0.4. A thermal hysteretic behavior of the resistivity is observed in the immediate vicinity of the metal-insulator phase boundary. Application of pressure tends to suppress the quasireentrant (metal-insulator-metal) transition and to stabilize the metallic phase. Measurements of the Hall coefficient and the electronic specific heat indicate that the barely metallic phase at about x=0.4 is characterized by an enhancement of carrier mass rather than by a reduction of carrier density.

引用

页码：14063 / 14066

页数：4

共 13 条

[1] OPTICAL-CONDUCTIVITY SPECTRA OF SR1-XLAXTIO3 - FILLING-DEPENDENT EFFECT OF THE ELECTRON CORRELATION [J].