Pressure- and composition-induced structural quantum phase transition in the cubic superconductor (Sr, Ca)3Ir4Sn13.

@article{Klintberg2012PressureAC,
  title={Pressure- and composition-induced structural quantum phase transition in the cubic superconductor (Sr, Ca)3Ir4Sn13.},
  author={Lina E. Klintberg and Swee Kuan Goh and Patricia Lebre Alireza and Paul J Saines and David A. Tompsett and Peter William Logg and Jinhu Yang and Bin Chen and Kazuyoshi Yoshimura and F Malte Grosche},
  journal={Physical review letters},
  year={2012},
  volume={109 23},
  pages={
          237008
        }
}
We show that the quasi-skutterudite superconductor Sr(3)Ir(4)Sn(13) undergoes a structural transition from a simple cubic parent structure, the I phase, to a superlattice variant, the I' phase, which has a lattice parameter twice that of the high temperature phase. We argue that the superlattice distortion is associated with a charge density wave transition of the conduction electron system and demonstrate that the superlattice transition temperature T(*) can be suppressed to zero by combining… CONTINUE READING