Study of superconducting fluctuation using Y Ba2Cu3O7 single crystals

Kouichi Semba, Takao Ishii, Azusa Matsuda

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In normal-state magnetoresistance studies, the layered structure and short coherence length of high-Tc superconductors make it possible to observe the Zeeman effect on superconducting fluctuation. Two problems, however, remain: (1) the Zeeman effect on the Maki-Thompson fluctuation (MTZ) in the Aronov-Hikami-Larkin (AHL) theory, and (2) whether the the clean or dirty limit approximation is valid. We have therefore studied the magnettoresistance of Y Ba2Cu3O7 bulk single crystals. We experimentally demonstrate that the MTZ fluctuation as presented in the AHL theory are absent. Moreover, we find that clean limit analysis without the MTZ component (ALO+MTO+ALZ) closely fits the experimental data. We obtained results quantitatively consistent with the results of recent optical and transport studies using Y Ba2Cu3O7 single crystals.

Original languageEnglish
Pages (from-to)1303-1304
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume185-189
Issue numberPART 2
DOIs
Publication statusPublished - 1991 Dec 1
Externally publishedYes

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Zeeman effect
Single crystals
single crystals
Magnetoresistance
Superconducting materials
approximation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Study of superconducting fluctuation using Y Ba2Cu3O7 single crystals. / Semba, Kouichi; Ishii, Takao; Matsuda, Azusa.

In: Physica C: Superconductivity and its Applications, Vol. 185-189, No. PART 2, 01.12.1991, p. 1303-1304.

Research output: Contribution to journalArticle

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