Coherence lengths and anisotropy in MgB2 superconductor

A. Dulčić; M. Požek; D. Paar; Eun Mi Choi; Hyun Jung Kim; W. N. Kang; Sung Ik Lee

Coherence lengths and anisotropy in MgB₂ superconductor

A. Dulčić
, M. Požek
, D. Paar
, Eun Mi Choi
, Hyun Jung Kim
, W. N. Kang
, Sung Ik Lee

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

Abstract

Field- and temperature-dependent microwave measurements have been carried out on MgB₂ thin film grown on Al₂O₃ substrate. The analysis reveals the mean-field coherence length ξ_MF in the mixed state and a temperature-independent anisotropy ratio γ_MF= ξ_MF^ab/ξ_MF^c≈2. At the superconducting transition, the scaling of the fluctuation conductivity yields the Ginzburg-Landau coherence length with a different anisotropy ratio γ_GL=2.8, also temperature independent.

Original language	English
Article number	020507
Pages (from-to)	205071-205074
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	2
State	Published - 1 Jan 2003
Externally published	Yes

Cite this

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title = "Coherence lengths and anisotropy in MgB2 superconductor",

abstract = "Field- and temperature-dependent microwave measurements have been carried out on MgB2 thin film grown on Al2O3 substrate. The analysis reveals the mean-field coherence length ξMF in the mixed state and a temperature-independent anisotropy ratio γMF= ξMFab/ξMFc≈2. At the superconducting transition, the scaling of the fluctuation conductivity yields the Ginzburg-Landau coherence length with a different anisotropy ratio γGL=2.8, also temperature independent.",

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T1 - Coherence lengths and anisotropy in MgB2 superconductor

AU - Dulčić, A.

AU - Požek, M.

AU - Paar, D.

AU - Choi, Eun Mi

AU - Kim, Hyun Jung

AU - Kang, W. N.

AU - Lee, Sung Ik

PY - 2003/1/1

Y1 - 2003/1/1

N2 - Field- and temperature-dependent microwave measurements have been carried out on MgB2 thin film grown on Al2O3 substrate. The analysis reveals the mean-field coherence length ξMF in the mixed state and a temperature-independent anisotropy ratio γMF= ξMFab/ξMFc≈2. At the superconducting transition, the scaling of the fluctuation conductivity yields the Ginzburg-Landau coherence length with a different anisotropy ratio γGL=2.8, also temperature independent.

AB - Field- and temperature-dependent microwave measurements have been carried out on MgB2 thin film grown on Al2O3 substrate. The analysis reveals the mean-field coherence length ξMF in the mixed state and a temperature-independent anisotropy ratio γMF= ξMFab/ξMFc≈2. At the superconducting transition, the scaling of the fluctuation conductivity yields the Ginzburg-Landau coherence length with a different anisotropy ratio γGL=2.8, also temperature independent.

UR - https://www.scopus.com/pages/publications/0037220274

M3 - Article

AN - SCOPUS:0037220274

SN - 1098-0121

VL - 67

SP - 205071

EP - 205074

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 2

M1 - 020507

ER -

Coherence lengths and anisotropy in MgB₂ superconductor

Abstract

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