GROWTH AND STUDY OF SINGLE-PHASE 2212 BSCCO WHISKERS OF SUBMICRON CROSS-SECTIONAL AREA

被引：97

作者：

LATYSHEV, YI ^{[1
]}

GORLOVA, IG ^{[1
]}

NIKITINA, AM ^{[1
]}

ANTOKHINA, VU ^{[1
]}

ZYBTSEV, SG ^{[1
]}

KUKHTA, NP ^{[1
]}

TIMOFEEV, VN ^{[1
]}

机构：

[1] AA BAIKOV MET INST,MOSCOW 117911,RUSSIA

来源：

PHYSICA C | 1993年 / 216卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(93)90092-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The growth of perfect single-phase (2212) superconducting BSCCO whiskers with cross-sectional area S as small as 0.1 mum2 is described. Submicron cross section whiskers are shown to have perfect crystalline structure, some of them being free of dislocations. The critical current density of the whiskers, J(c), is shown to increase as S decreases < 1 mum2 achieving 5 X 10(5) A/CM2 for S = 0.15 gm2. The temperature dependence of resistivity rho(T) of submicron whiskers in contrast to bulk-like single crystals exhibits a prominent deviation DELTArho down from linear temperature dependence rho(N) up to T approximately 200 K. DELTArho is shown to be proportional to S-1: DELTArho/rhoN S-1 exp (- T0/T0), T0 = 40 K. The origin of DELTArho due to one-dimensional (1D) superconducting fluctuations is discussed.

引用

页码：471 / 477

页数：7

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