Superconducting fluctuation effects in grain-aligned HgBa2Ca2Cu3O8+δ

Myoung Kwang Bae, Mahn-Soo Choi, Sergey Lee, Sung Ik Lee, W. C. Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have measured the normal state magnetization for grain-aligned HgBa2Ca2Cu3O8+δ with high and low magnetic fields applied perpendicular to the CuO2 planes. The high-field magnetization curves follow the three-dimensional scaling based on the Ginzburg-Landau theory. In addition, we observed significant superconducting fluctuation diamagnetism above Tc using a low magnetic field, and analyzed it by utilizing the modified Lawrence-Doniach model. Our result demonstrates the dimensional crossover from 3D to 2D as the temperature increases, which is consistent with the scaling result of a high-field limit. From the analysis, we obtained the upper critical field slope, zero-temperature GL coherence length, and mass anisotropy.

Original languageEnglish
Pages (from-to)249-251
Number of pages3
JournalPhysica C: Superconductivity and its Applications
Volume231
Issue number3-4
Publication statusPublished - 1994 Oct 1
Externally publishedYes

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Magnetization
Diamagnetism
Magnetic fields
scaling
magnetization
diamagnetism
magnetic fields
crossovers
Anisotropy
slopes
Temperature
anisotropy
temperature
curves

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Superconducting fluctuation effects in grain-aligned HgBa2Ca2Cu3O8+δ . / Bae, Myoung Kwang; Choi, Mahn-Soo; Lee, Sergey; Lee, Sung Ik; Lee, W. C.

In: Physica C: Superconductivity and its Applications, Vol. 231, No. 3-4, 01.10.1994, p. 249-251.

Research output: Contribution to journalArticle

Bae, Myoung Kwang ; Choi, Mahn-Soo ; Lee, Sergey ; Lee, Sung Ik ; Lee, W. C. / Superconducting fluctuation effects in grain-aligned HgBa2Ca2Cu3O8+δ In: Physica C: Superconductivity and its Applications. 1994 ; Vol. 231, No. 3-4. pp. 249-251.
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