Superconducting properties of Sn1-xInxTe (x = 0.38-0.45) studied using muon-spin spectroscopy

作者：Saghir M^*; Barker J A T; Balakrishnan G; Hillier A D; Lees M R

来源：Physical Review B, 2014, 90(6): 064508.

DOI：10.1103/PhysRevB.90.064508

The superconducting properties of Sn1-xInxTe (x = 0.38-0.45) have been studied using magnetization and muon-spin rotation or relaxation (mu SR) measurements. These measurements show that the superconducting critical temperature T-c of Sn1-xInxTe increases with increasing x, reaching a maximum at around 4.8 K for x = 0.45. Zero-field mu SR 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 lambda(T) in the mixed state. For all the compositions studied,.(T) can be well described using a single-gap s-wave BCS model. The magnetic penetration depth at zero temperature lambda(0) ranges from 500 to 580 nm.

• 出版日期2014-8-15