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Superconducting properties of Sn1−xInxTe (x=0.38–0.45) studied using muon-spin spectroscopy
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Saghir, Mohammad, Barker, Joel, Balakrishnan, Geetha, Hillier, A. D. (Adrian D.) and Lees, Martin R. (2014) Superconducting properties of Sn1−xInxTe (x=0.38–0.45) studied using muon-spin spectroscopy. Physical Review B (Condensed Matter and Materials Physics), Volume 90 (Number 6). Article number 064508. doi:10.1103/PhysRevB.90.064508 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.90.064508
Abstract
The superconducting properties of Sn1−xInxTe (x=0.38–0.45) have been studied using magnetization and muon-spin rotation or relaxation (μSR) measurements. These measurements show that the superconducting critical temperature Tc of Sn1−xInxTe increases with increasing x, reaching a maximum at around 4.8 K for x=0.45. Zero-field μSR results indicate that time-reversal symmetry is preserved in this material. Transverse-field muon-spin rotation has been used to study the temperature dependence of the magnetic penetration depth λ(T) in the mixed state. For all the compositions studied, λ(T) can be well described using a single-gap s-wave BCS model. The magnetic penetration depth at zero temperature λ(0) ranges from 500 to 580 nm. Both the superconducting gap Δ(0) at 0 K and the gap ratio Δ(0)/kBTc indicate that Sn1−xInxTe (x=0.38–0.45) should be considered as a superconductor with intermediate to strong coupling.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||
Publisher: | American Physical Society | ||||||
ISSN: | 1098-0121 | ||||||
Official Date: | 15 August 2014 | ||||||
Dates: |
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Volume: | Volume 90 | ||||||
Number: | Number 6 | ||||||
Article Number: | Article number 064508 | ||||||
DOI: | 10.1103/PhysRevB.90.064508 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access |
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