Pressure- and Composition-Induced Structural Quantum Phase Transition in the Cubic Superconductor (Sr,Ca)3Ir4Sn13

Lina E. Klintberg, Swee K. Goh, Patricia L. Alireza, Paul J. Saines, David A. Tompsett, Peter W. Logg, Jinhu Yang, Bin Chen, Kazuyoshi Yoshimura, and F. Malte Grosche
Phys. Rev. Lett. 109, 237008 – Published 5 December 2012
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Abstract

We show that the quasi-skutterudite superconductor Sr3Ir4Sn13 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 chemical and physical pressure. This enables the first comprehensive investigation of a superlattice quantum phase transition and its interplay with superconductivity in a cubic charge density wave system.

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  • Received 17 February 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.237008

© 2012 American Physical Society

Authors & Affiliations

Lina E. Klintberg1, Swee K. Goh1,*, Patricia L. Alireza1, Paul J. Saines2, David A. Tompsett1,†, Peter W. Logg1, Jinhu Yang3,4, Bin Chen3,4, Kazuyoshi Yoshimura4, and F. Malte Grosche1

  • 1Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
  • 2Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom
  • 3Department of Physics, Graduate School of Science, Hangzhou Normal University, Hangzhou 310036, China
  • 4Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan

  • *skg27@cam.ac.uk
  • Present address: Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom.

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Issue

Vol. 109, Iss. 23 — 7 December 2012

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