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

L.E. Klintberg, S.K. Goh, P.L. Alireza, D.A. Tompsett, P.W. Logg, F.M. Grosche, P.J. Saines, J. Yang, B. Chen, K. Yoshimura

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Abstract

We show that the quasi-skutterudite superconductor SrIr Sn 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.
Original languageEnglish
Article number237008
JournalPhysical Review Letters
Volume109
Issue number23
DOIs
Publication statusPublished - 5 Dec 2012

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conduction electrons
lattice parameters
superconductivity
transition temperature

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Klintberg, L. E., Goh, S. K., Alireza, P. L., Tompsett, D. A., Logg, P. W., Grosche, F. M., ... Yoshimura, K. (2012). Pressure- and composition-induced structural quantum phase transition in the cubic superconductor (Sr,Ca)IrSn. Physical Review Letters, 109(23), [237008]. https://doi.org/10.1103/PhysRevLett.109.237008

Pressure- and composition-induced structural quantum phase transition in the cubic superconductor (Sr,Ca)IrSn. / Klintberg, L.E.; Goh, S.K.; Alireza, P.L.; Tompsett, D.A.; Logg, P.W.; Grosche, F.M.; Saines, P.J.; Yang, J.; Chen, B.; Yoshimura, K.

In: Physical Review Letters, Vol. 109, No. 23, 237008, 05.12.2012.

Research output: Contribution to journalArticle

Klintberg, LE, Goh, SK, Alireza, PL, Tompsett, DA, Logg, PW, Grosche, FM, Saines, PJ, Yang, J, Chen, B & Yoshimura, K 2012, 'Pressure- and composition-induced structural quantum phase transition in the cubic superconductor (Sr,Ca)IrSn', Physical Review Letters, vol. 109, no. 23, 237008. https://doi.org/10.1103/PhysRevLett.109.237008
Klintberg, L.E. ; Goh, S.K. ; Alireza, P.L. ; Tompsett, D.A. ; Logg, P.W. ; Grosche, F.M. ; Saines, P.J. ; Yang, J. ; Chen, B. ; Yoshimura, K. / Pressure- and composition-induced structural quantum phase transition in the cubic superconductor (Sr,Ca)IrSn. In: Physical Review Letters. 2012 ; Vol. 109, No. 23.
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