DOPING-INDUCED AND PRESSURE-INDUCED CHANGE OF ELECTRICAL AND MAGNETIC-PROPERTIES IN THE MOTT-HUBBARD INSULATOR LATIO3

被引：101

作者：

OKADA, Y

ARIMA, T

TOKURA, Y

MURAYAMA, C

MORI, N

机构：

[1] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN

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

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.48.9677

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A perovskitelike compound LaTiO3 shows insulating or barely metallic behavior depending on a slight (less-than-or-equal-to 0.04) deviation of the Ti valence (+3) arising from nonstoichiometry of La and/or oxygen. In order to investigate electronic properties of the specimens in the very vicinity of the Mott insulator-metal phase boundary, we have measured the doping- and pressure-induced effects on the electrical and magnetic properties. The results have indicated a crossover behavior from localized to itinerant nature of the electronic state with increase of the doping level and one-electron bandwidth.

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收藏

页码：9677 / 9683

页数：7

相关论文

共 21 条

[1] REFLECTANCE AND RESISTIVITY OF BARELY METALLIC LATIO3 [J].

CRANDLES, DA ;

TIMUSK, T ;

GREEDAN, JE .

PHYSICAL REVIEW B, 1991, 44 (24) :13250-13254

[2] A HIGH-RESOLUTION NEUTRON-DIFFRACTION STUDY OF THE PEROVSKITE LATIO3 [J].

EITEL, M ;

GREEDAN, JE .

JOURNAL OF THE LESS-COMMON METALS, 1986, 116 (01) :95-104

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

FUJISHIMA, Y ;

TOKURA, Y ;

ARIMA, T ;

UCHIDA, S .

PHYSICAL REVIEW B, 1992, 46 (17) :11167-11170

[4] SIMULATIONS OF THE 3-DIMENSIONAL HUBBARD-MODEL - HALF-FILLED BAND SECTOR [J].

HIRSCH, JE .

PHYSICAL REVIEW B, 1987, 35 (04) :1851-1859

[5] UNIVERSAL RELATIONSHIP OF THE RESISTIVITY AND SPECIFIC-HEAT IN HEAVY-FERMION COMPOUNDS [J].

KADOWAKI, K ;

WOODS, SB .

SOLID STATE COMMUNICATIONS, 1986, 58 (08) :507-509

[6] CU-63,CU-65-NMR STUDY OF OXIDIZED AND REDUCED ND2-XCEXCUO4 [J].

KAMBE, S ;

YASUOKA, H ;

TAKAGI, H ;

UCHIDA, S ;

TOKURA, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1991, 60 (02) :400-403

[7] METAL-INSULATOR-TRANSITION IN LA1-XSRXTIO3 AND Y1-XCAXTIO3 INVESTIGATED BY SPECIFIC-HEAT MEASUREMENTS [J].

KUMAGAI, K ;

SUZUKI, T ;

TAGUCHI, Y ;

OKADA, Y ;

FUJISHIMA, Y ;

TOKURA, Y .

PHYSICAL REVIEW B, 1993, 48 (10) :7636-7642

[8] PHASE-DIAGRAM OF LATIOX - FROM 2D LAYERED FERROELECTRIC INSULATOR TO 3D WEAK FERROMAGNETIC SEMICONDUCTOR [J].

LICHTENBERG, F ;

WIDMER, D ;

BEDNORZ, JG ;

WILLIAMS, T ;

RELLER, A .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 82 (02) :211-216

[9] CRYSTAL-STRUCTURES AND CRYSTAL-CHEMISTRY OF THE RETIO3 PEROVSKITES - RE=LA, ND, SM, GD, Y [J].

MACLEAN, DA ;

NG, HN ;

GREEDAN, JE .

JOURNAL OF SOLID STATE CHEMISTRY, 1979, 30 (01) :35-44

[10] CRYSTAL-GROWTH, ELECTRICAL-RESISTIVITY, AND MAGNETIC-PROPERTIES OF LATIO3 AND CETIO3 - EVIDENCE FOR A METAL-SEMICONDUCTOR TRANSITION [J].

MACLEAN, DA ;

GREEDAN, JE .

INORGANIC CHEMISTRY, 1981, 20 (04) :1025-1029