Vortex fluctuation of grain-aligned HgBa2Ca2Cu3O8+δ

Myoung Kwang Bae; M. S. Choi; Mi Ock Mun; Sergey Lee; Sung Ik Lee; W. C. Lee

doi:10.1016/0921-4534(94)90193-7

Vortex fluctuation of grain-aligned HgBa₂Ca₂Cu₃O_8+δ

Myoung Kwang Bae, M. S. Choi, Mi Ock Mun, Sergey Lee, Sung Ik Lee, W. C. Lee

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

We have measured the reversible magnetization M(H, T) for grain-aligned HgBa₂Ca₂Cu₃O_8+δ. Our data exhibit a clear vortex fluctuation about 6 K below the superconducting onset temperature. The derived in-plane magnetic penetration depth λ_ab(0) is 1700 Å which is similar to those of other high-T_c superconductors. In addition, the zero-temperature GL coherence length ξ_ab (0) is 22±5 Å, which implies GL parameter κ{script}=77±13. This κ{script} is much greater than that of HgBa₂CuO₆, but similar to that of YBa₂Cu₃O₇.

Original language	English
Pages (from-to)	195-198
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	228
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(94)90193-7
Publication status	Published - 1994 Jul 10
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "Vortex fluctuation of grain-aligned HgBa2Ca2Cu3O8+δ",

abstract = "We have measured the reversible magnetization M(H, T) for grain-aligned HgBa2Ca2Cu3O8+δ. Our data exhibit a clear vortex fluctuation about 6 K below the superconducting onset temperature. The derived in-plane magnetic penetration depth λab(0) is 1700 {\AA} which is similar to those of other high-Tc superconductors. In addition, the zero-temperature GL coherence length ξab (0) is 22±5 {\AA}, which implies GL parameter κ{script}=77±13. This κ{script} is much greater than that of HgBa2CuO6, but similar to that of YBa2Cu3O7.",

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AU - Bae, Myoung Kwang

AU - Choi, M. S.

AU - Mun, Mi Ock

AU - Lee, Sergey

AU - Lee, Sung Ik

AU - Lee, W. C.

PY - 1994/7/10

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N2 - We have measured the reversible magnetization M(H, T) for grain-aligned HgBa2Ca2Cu3O8+δ. Our data exhibit a clear vortex fluctuation about 6 K below the superconducting onset temperature. The derived in-plane magnetic penetration depth λab(0) is 1700 Å which is similar to those of other high-Tc superconductors. In addition, the zero-temperature GL coherence length ξab (0) is 22±5 Å, which implies GL parameter κ{script}=77±13. This κ{script} is much greater than that of HgBa2CuO6, but similar to that of YBa2Cu3O7.

AB - We have measured the reversible magnetization M(H, T) for grain-aligned HgBa2Ca2Cu3O8+δ. Our data exhibit a clear vortex fluctuation about 6 K below the superconducting onset temperature. The derived in-plane magnetic penetration depth λab(0) is 1700 Å which is similar to those of other high-Tc superconductors. In addition, the zero-temperature GL coherence length ξab (0) is 22±5 Å, which implies GL parameter κ{script}=77±13. This κ{script} is much greater than that of HgBa2CuO6, but similar to that of YBa2Cu3O7.

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