Exploring the interplay between superconductivity and charge-density-wave in (Sr<sub>1-x</sub>Ca<sub>x</sub>)<sub>3</sub>Rh<sub>4</sub>Sn<sub>13</sub>
ORAL
Abstract
Charge-density-waves (CDW) and their relation to superconductivity and quantum criticality have attracted the attention of the condensed matter physics community in recent years. In high-temperature superconductors, the interplay between the CDW and superconducting states is a subject of debate [1,2]. In intermetallic compounds such as R3M4Sn13 (R = Sr, Ca and M = Rh, Ir), the CDW can be suppressed by a non-thermal control parameter, which enhances the superconductivity and leads to a quantum critical point (QCP) where the CDW transition temperature (TCDW) vanishes [3,4]. However, whether the nature of the relation between CDW and SC states in these materials is of coexistence or competition is still a matter of debate. In this work, we aim to explore this interplay through low-temperature single-crystal synchrotron X-ray diffraction, thermal expansion, and electrical transport measurements under uniaxial stress.
*This work was financed in part by the Conselho Nacional de Desenvlovimento Científico e Tecnológico (CNPq).This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001.Work at Los Alamos National Laboratory (LANL) was performed under the auspices of the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering.
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Publication: [1] J. Chang et al., Nat. Phys. 8, 871 (2012).
[2] B. Loret et al., Nat. Phys. 15, 771 (2019).
[3] L. E. Klintberg et al., Phys. Rev. Lett. 109, 237008 (2012).
[4] S. K. Goh et al., Phys. Rev. Lett. 114, 097002 (2015).
Presenters
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Fellipe B Carneiro
- Los Alamos National Laboratory