2014/06/30 by M. Saghir, J. A. T. Barker, G. Balakrishnan +2 · 3 citations
Chemistry · Physics and Astronomy · #Advanced Condensed Matter Physics #Chemistry #Condensed matter physics #Coupling (piping) #Crystallography #Lambda #London penetration depth #Magnetic field #Magnetization #Materials science #Muon #Muon spin spectroscopy #Particle physics #Penetration depth #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #Topological Materials and Phenomena #cond-mat.mtrl-sci #cond-mat.other #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.90.064508
published as Physical Review B 90, 064508 (2014) · 7 pages, 6 figures, 3 tables
openalex publication_date 2014/08/15 · arxiv created 2014/09/29 · arxiv updated 2014/09/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The superconducting properties of Sn_1\ensuremath-xInxTe (x=0.38--0.45) have been studied using magnetization and muon-spin rotation or relaxation (\ensuremathμSR) measurements. These measurements show that the superconducting critical temperature Tc of Sn_1\ensuremath-xInxTe increases with increasing x, reaching a maximum at around 4.8 K for x=0.45. Zero-field \ensuremathμSR 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 \ensuremathλ(T) in the mixed state. For all the compositions studied, \ensuremathλ(T) can be well described using a single-gap s-wave BCS model. The magnetic penetration depth at zero temperature \ensuremathλ(0) ranges from 500 to 580 nm. Both the superconducting gap \ensuremathΔ(0) at 0 K and the gap ratio \ensuremathΔ(0)/kBTc indicate that Sn_1\ensuremath-xInxTe (x=0.38--0.45) should be considered as a superconductor with intermediate to strong coupling.