THE LOCALIZED CHARACTER OF THE METALLIC STATE IN HIGH-TC SUPERCONDUCTORS

被引：12

作者：

DALLACASA, V ^{[1
]}

FEDUZI, R ^{[1
]}

机构：

[1] JOINT RES CTR,INST ADV MAT,I-21020 ISPRA,ITALY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 195卷 / 1-2期

关键词：

D O I：

10.1016/0925-8388(93)90793-M

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The resistivity behaviour of a large series of polycrystalline samples at different defect (carrier) concentrations is discussed using the form rho0 exp(T0/T)b in which rho0 is a temperature-dependent parameter. This equation allows to examine the gradual and characteristic change of rho(T) as a function of carrier concentration observed in single-crystals as well as in polycrystalline superconductors within an single mechanism. A cross-over between the b=1/2 and the b=1/4 regimes is found. The ''metallic'' dependence of the normal resistivity state has a induced-disorder localized character.

引用

页码：531 / 534

页数：4

共 30 条

[1] ELECTRICAL CONDUCTIVITY IN DISORDERED SYSTEMS
ADLER, D
FLORA, LP
SENTURIA, SD
[J]. SOLID STATE COMMUNICATIONS, 1973, 12 (01) : 9 - 12
[2] UNIVERSAL CROSSOVER IN VARIABLE RANGE HOPPING WITH COULOMB INTERACTIONS
AHARONY, A
ZHANG, YZ
SARACHIK, MP
[J]. PHYSICAL REVIEW LETTERS, 1992, 68 (26) : 3900 - 3903
[3] ELECTRICAL-CONDUCTION IN HEAVILY DOPED GERMANIUM
ALLEN, FR
ADKINS, CJ
[J]. PHILOSOPHICAL MAGAZINE, 1972, 26 (04): : 1027 - &
[4] HOPPING CONDUCTIVITY IN DISORDERED SYSTEMS
AMBEGAOKAR, V
HALPERIN, BI
LANGER, JS
[J]. PHYSICAL REVIEW B-SOLID STATE, 1971, 4 (08): : 2612 - +
[5] NORMAL TUNNELING AND NORMAL TRANSPORT - DIAGNOSTICS FOR THE RESONATING-VALENCE-BOND STATE
ANDERSON, PW
ZOU, Z
[J]. PHYSICAL REVIEW LETTERS, 1988, 60 (02) : 132 - 135
[6] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM
BEDNORZ, JG
MULLER, KA
[J]. ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02): : 189 - 193
[7] Castner T.G., 1991, HOPPING TRANSPORT SO
[8] VARIABLE-RANGE HOPPING CONDUCTION IN BA1-XKXBIO3-Y SYSTEM
DABROWSKI, B
HINKS, DG
JORGENSEN, JD
KALIA, RK
VASHISHTA, P
RICHARDS, DR
MARX, DT
MITCHELL, AW
[J]. PHYSICA C, 1988, 156 (01): : 24 - 26
[9] QUANTUM PERCOLATION OF HIGH T(C) MATERIALS - T(C) DEPENDENCE ON CARRIER DENSITY
DALLACASA, V
FEDUZI, R
[J]. PHYSICS LETTERS A, 1992, 170 (02) : 153 - 158
[10] COULOMB GAP AND LOW-TEMPERATURE CONDUCTIVITY OF DISORDERED SYSTEMS
EFROS, AL
SHKLOVSKII, BI
[J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1975, 8 (04): : L49 - L51

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