TY - JOUR
T1 - Pressure- and composition-induced structural quantum phase transition in the cubic superconductor (Sr,Ca)IrSn
AU - Klintberg, L.E.
AU - Goh, S.K.
AU - Alireza, P.L.
AU - Tompsett, D.A.
AU - Logg, P.W.
AU - Grosche, F.M.
AU - Saines, P.J.
AU - Yang, J.
AU - Chen, B.
AU - Yoshimura, K.
PY - 2012/12/5
Y1 - 2012/12/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84870608733&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1103/PhysRevLett.109.237008
U2 - 10.1103/PhysRevLett.109.237008
DO - 10.1103/PhysRevLett.109.237008
M3 - Article
AN - SCOPUS:84870608733
SN - 0031-9007
VL - 109
JO - Physical Review Letters
JF - Physical Review Letters
IS - 23
M1 - 237008
ER -