μ+SR study of carbon-doped MgB2 superconductors

K. Papagelis; J. Arvanitidis; K. Prassides; A. Schenck; T. Takenobu; Y. Iwasa

doi:10.1209/epl/i2003-00102-1

μ⁺SR study of carbon-doped MgB₂ superconductors

K. Papagelis^*, J. Arvanitidis, K. Prassides, A. Schenck, T. Takenobu, Y. Iwasa

^*Corresponding author for this work

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

23 Citations (Scopus)

Abstract

The evolution of the superconducting properties of the carbon-doped MgB₂ superconductors, MgB_2-xC_x (x = 0.02, 0.04, 0.06) have been investigated by the transverse-field muon spin rotation (TF-μ⁺SR) technique. The low-temperature depolarisation rate, σ(0) at 0.6 T which is proportional to the second moment of the field distribution of the vortex lattice decreases monotonically with increasing electron doping and decreasing T_c. In addition, the temperature dependence of σ(T) has been analysed in terms of a two-gap model. The size of the two superconducting gaps decreases linearly as the carbon content increases.

Original language	English
Pages (from-to)	254-260
Number of pages	7
Journal	Europhysics Letters
Volume	61
Issue number	2
DOIs	https://doi.org/10.1209/epl/i2003-00102-1
Publication status	Published - 2003 Jan
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "The evolution of the superconducting properties of the carbon-doped MgB2 superconductors, MgB2-xCx (x = 0.02, 0.04, 0.06) have been investigated by the transverse-field muon spin rotation (TF-μ+SR) technique. The low-temperature depolarisation rate, σ(0) at 0.6 T which is proportional to the second moment of the field distribution of the vortex lattice decreases monotonically with increasing electron doping and decreasing Tc. In addition, the temperature dependence of σ(T) has been analysed in terms of a two-gap model. The size of the two superconducting gaps decreases linearly as the carbon content increases.",

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T1 - μ+SR study of carbon-doped MgB2 superconductors

AU - Papagelis, K.

AU - Arvanitidis, J.

AU - Prassides, K.

AU - Schenck, A.

AU - Takenobu, T.

AU - Iwasa, Y.

PY - 2003/1

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N2 - The evolution of the superconducting properties of the carbon-doped MgB2 superconductors, MgB2-xCx (x = 0.02, 0.04, 0.06) have been investigated by the transverse-field muon spin rotation (TF-μ+SR) technique. The low-temperature depolarisation rate, σ(0) at 0.6 T which is proportional to the second moment of the field distribution of the vortex lattice decreases monotonically with increasing electron doping and decreasing Tc. In addition, the temperature dependence of σ(T) has been analysed in terms of a two-gap model. The size of the two superconducting gaps decreases linearly as the carbon content increases.

AB - The evolution of the superconducting properties of the carbon-doped MgB2 superconductors, MgB2-xCx (x = 0.02, 0.04, 0.06) have been investigated by the transverse-field muon spin rotation (TF-μ+SR) technique. The low-temperature depolarisation rate, σ(0) at 0.6 T which is proportional to the second moment of the field distribution of the vortex lattice decreases monotonically with increasing electron doping and decreasing Tc. In addition, the temperature dependence of σ(T) has been analysed in terms of a two-gap model. The size of the two superconducting gaps decreases linearly as the carbon content increases.

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μ⁺SR study of carbon-doped MgB₂ superconductors

Abstract

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