Phase Diagram and Superconductivity: New Insight into the Fundamentals of InSn Bimetallic Alloys

2018-12-17T00:00:00Z (GMT) by Ashish C. Gandhi Sheng Yun Wu
We report the crystal structure and superconducting phase diagram for InpSn1–p (0.01 ≤ p ≤ 0.99) bimetallic alloys. A weak electron–phonon coupling was observed in intergranular linked InSn superconductors over an infinite range mediated by high-energy phonons. An enhanced TC(0) ∼ 6.2 K and critical field HC(0) ∼ 2.7 kOe were determined from intermediate (γ-Sn + β-InSn) composite alloys attributed to internal strain possibly originating from thermal expansion effect of constituent phases.