FLUCTUATION-ENHANCED CONDUCTIVITY OF HIGH-QUALITY YBA2CU3O7-DELTA SINGLE-CRYSTALS

被引：9

作者：

KUMM, G

WINZER, K

机构：

[1] I. Physikalisches Institut, Universität Göttingen, Göttingen, 3400

来源：

PHYSICA B | 1990年 / 165卷

关键词：

D O I：

10.1016/S0921-4526(09)80266-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present measurements of the in - plane resistivity ρab of YBa2Cu3O7−δ single crystals with Tc ∼ 92 K and ρab (100 K) ∼ 50 μΩcm. The temperature dependence of the fluctuation conductivity above Tc is analyzed in terms of direct and indirect fluctuation contributions for layered superconductors. Evidence for clean limit type-II superconductivity in our crystals is given by large values of the mean free path ℓab » ξab. © 1990, Elsevier Science Publishers B.V. (North-Holland). All rights reserved.

引用

收藏

页码：1361 / 1362

页数：2

相关论文

共 11 条

[1] INFLUENCE OF FLUCTUATION PAIRING OF ELECTRONS ON CONDUCTIVITY OF NORMAL METAL [J].

ASLAMAZO.LG ;

LARKIN, AI .

PHYSICS LETTERS A, 1968, A 26 (06) :238-&

[2] THERMODYNAMIC FLUCTUATIONS IN THE SUPERCONDUCTOR Y1BA2CU3O9-DELTA - EVIDENCE FOR 3-DIMENSIONAL SUPERCONDUCTIVITY [J].

FREITAS, PP ;

TSUEI, CC ;

PLASKETT, TS .

PHYSICAL REVIEW B, 1987, 36 (01) :833-835

[3] SPECIFIC-HEAT OF A SINGLE-CRYSTAL OF YBA2CU3O7-DELTA - FLUCTUATION EFFECTS IN A BULK SUPERCONDUCTOR IN ZERO MAGNETIC-FIELD AND IN A MAGNETIC-FIELD [J].

GINSBERG, DM ;

INDERHEES, SE ;

SALAMON, MB ;

GOLDENFELD, N ;

RICE, JP ;

PAZOL, BG .

PHYSICA C, 1988, 153 :1082-1085

[4]

Halbritter J., 1989, International Journal of Modern Physics B, V3, P719, DOI 10.1142/S0217979289000531

[5]

Hikami S., 1988, Modern Physics Letters B, V2, P693, DOI 10.1142/S0217984988000369

[6]

LAWRENCE WE, 1970, P LT KYOTO, V12, P361

[7] CRITICAL FLUCTUATION OF ORDER PARAMETER IN TYPE-2 SUPERCONDUCTORS [J].

MAKI, K .

PROGRESS OF THEORETICAL PHYSICS, 1968, 39 (04) :897-&

[8] MAGNETORESISTANCE OF C-AXIS-ORIENTED EPITAXIAL YBA2CU3O7-X FILMS ABOVE TC [J].

MATSUDA, Y ;

HIRAI, T ;

KOMIYAMA, S ;

TERASHIMA, T ;

BANDO, Y ;

IIJIMA, K ;

YAMAMOTO, K ;

HIRATA, K .

PHYSICAL REVIEW B, 1989, 40 (07) :5176-5179

[9] UPPER CRITICAL-FIELD, FLUCTUATION CONDUCTIVITY, AND DIMENSIONALITY OF YBA2CU3O7-X [J].

OH, B ;

CHAR, K ;

KENT, AD ;

NAITO, M ;

BEASLEY, MR ;

GEBALLE, TH ;

HAMMOND, RH ;

KAPITULNIK, A ;

GRAYBEAL, JM .

PHYSICAL REVIEW B, 1988, 37 (13) :7861-7864

[10] MICROWAVE, FLUX FLOW, AND FLUCTUATION RESISTANCE OF DIRTY TYPE-II SUPERCONDUCTORS [J].

THOMPSON, RS .

PHYSICAL REVIEW B-SOLID STATE, 1970, 1 (01) :327-+