High-Pressure Synthesis and Superconducting Properties of NaCl-Type In1−xPbxTe (x = 0–0.8)
Masayoshi Katsuno, Rajveer Jha, Kazuhisa Hoshi, Ryota Sogabe, Yosuke Goto, Yoshikazu Mizuguchi
Abstract
We have investigated the Pb-substitution effect upon the superconductivity of NaCl-type In1−xPbxTe. Polycrystalline samples with x = 0–0.8 were synthesized using high-pressure synthesis. The lattice parameter was systematically increased by Pb substitution. For x ≤ 0.6, bulk superconductivity was observed, and the superconducting transition temperature increased from 3 K (for InTe) to 5 K by Pb substitutions. From analyses of specific heat jumps at the superconducting transition, conventional (phonon-mediated) weak-coupling pairing mechanisms were suggested for In1−xPbxTe.
Topics & Concepts
SuperconductivityCrystalliteCondensed matter physicsPairingSuperconducting transition temperatureMaterials scienceSubstitution (logic)High pressureSpecific heatLattice (music)PhononTransition temperatureChemistryCrystallographyPhysicsThermodynamicsProgramming languageAcousticsComputer sciencePhysics of Superconductivity and MagnetismIron-based superconductors researchAdvanced Thermoelectric Materials and Devices