VORTEX FLUCTUATION OF GRAIN-ALIGNED HGBA2CA2CU3O8+DELTA

被引：20
作者：
BAE, MK
CHOI, MS
MUN, MO
LEE, S
LEE, SI
LEE, WC
机构：
[1] POHANG UNIV SCI & TECHNOL,DEPT PHYS,POHANG 790784,SOUTH KOREA
[2] RES INST SCI & TECHNOL,DIV PHYS,POHANG 790600,SOUTH KOREA
[3] SOOK MYUNG WOMENS UNIV,DEPT PHYS,SEOUL 140742,SOUTH KOREA
[4] MOSCOW MV LOMONOSOV STATE UNIV,DEPT CHEM,MOSCOW 119899,RUSSIA
来源：
PHYSICA C | 1994年 / 228卷 / 1-2期
基金：
新加坡国家研究基金会;
关键词：
D O I：
10.1016/0921-4534(94)90193-7
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have measured the reversible magnetization M(H, T) for grain-aligned HgBa2Ca2Cu3O8+delta. Our data exhibit a clear vortex fluctuation about 6 K below the superconducting onset temperature. The derived in-plane magnetic penetration depth lambda(ab)(0) is 1700 angstrom which is similar to those of other high-T(c) superconductors. In addition, the zero-temperature GL coherence length xi(ab)(0) is 22 +/- 5 angstrom, which implies GL parameter K = 77 +/- 13. This kappa is much greater than that of HgBa2CuO6, but similar to that of YBa2Cu3O7.
引用
收藏
页码：195 / 198
页数：4
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