Effects of electron localization in V2-yO3

被引：5

作者：

Andreev, V. N. ^{[1
]}

Klimov, V. A. ^{[1
]}

机构：

[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

来源：

PHYSICS OF THE SOLID STATE | 2006年 / 48卷 / 12期

关键词：

D O I：

10.1134/S1063783406120146

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of nonstoichiometry on the metal-insulator phase transition in V2O3 is studied. It is established that an increase in the vanadium deficiency in V2-yO3 brings about a shift in the phase transition temperature toward lower temperatures and an increase in the width of the temperature hysteresis loop of the electrical conductivity. As the vanadium deficiency increases to a level corresponding to the composition similar to V1.974O3, the phase transition completely disappears and the sample remains metallic down to T = 1.6 K. The magnetoresistance is measured for samples of this composition in longitudinal and transverse magnetic fields at T = 4.2 K.

引用

页码：2328 / 2331

页数：4

共 19 条

[1] RESISTIVITY OF THE HIGH-TEMPERATURE METALLIC PHASE OF VO2 [J].

ALLEN, PB ;

WENTZCOVITCH, RM ;

SCHULZ, WW ;

CANFIELD, PC .

PHYSICAL REVIEW B, 1993, 48 (07) :4359-4363

[2]

Andreev V. N., 1976, Soviet Physics - Solid State, V17, P1966

[3] Electrical conductivity in the antiferromagnetic insulating phase of V2O3 -: art. no. 235124 [J].

Andreev, VN ;

Chudnovskiy, FA ;

Honig, JM ;

Metcalf, PA .

PHYSICAL REVIEW B, 2004, 70 (23) :1-4

[4]

ANDREEV VN, 1994, JETP LETT+, V60, P647

[5] Acoustic emission at phase transition in vanadium sesquioxide single crystals [J].

Andreev, VN ;

Pikulin, VA ;

Frolov, DI .

PHYSICS OF THE SOLID STATE, 2000, 42 (02) :330-333

[6]

ARONOV AG, 1968, SOV PHYS JETP, V28, P704

[7]

AUSTIN JG, 1969, PHILOS MAG, V19, P939

[8] MAGNETIC AND TRANSPORT STUDIES OF PURE V2O3 UNDER PRESSURE [J].

CARTER, SA ;

ROSENBAUM, TF ;

LU, M ;

JAEGER, HM ;

METCALF, P ;

HONIG, JM ;

SPALEK, J .

PHYSICAL REVIEW B, 1994, 49 (12) :7898-7903

[9] NEW PHASE-BOUNDARY IN HIGHLY CORRELATED, BARELY METALLIC V2O3 [J].

CARTER, SA ;

ROSENBAUM, TF ;

HONIG, JM ;

SPALEK, J .

PHYSICAL REVIEW LETTERS, 1991, 67 (24) :3440-3443

[10]

CHRISTIAN JW, 1978, THEORY TRANSFORMAT 1

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