BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Enhancement of strong coupling s-wave superconductivity in the vic
 inity of a quantum critical point in (Ca\,Sr)$_3$Rh$_4$Sn$_{13}$
DTSTART;VALUE=DATE-TIME:20220829T164000Z
DTEND;VALUE=DATE-TIME:20220829T170000Z
DTSTAMP;VALUE=DATE-TIME:20220826T110058Z
UID:indico-contribution-3771@indico.stfc.ac.uk
DESCRIPTION:Speakers: Jonas A. Krieger (Max Planck Institute of Microstruc
 ture Physics)\nWe report muon spin rotation ($\\mu$SR) studies of the supe
 rconducting properties as a function of chemical and hydrostatic pressure 
 on the cubic ternary intermetallic (Ca$_{x}$Sr$_{1-x}$)$_{3}$Rh$_{4}$Sn$_{
 13}$ compounds\, which feature strong coupling phonon-mediated BCS superco
 nductivity and a structural phase transition a critical pressure p$_c$ ass
 ociated with a charge density wave (CDW) formation$\\\,[1]$. A strong enha
 ncement of the superfluid density and a pronounced maximum in the pairing 
 strength provide evidence of a quantum critial point at p$_c$\, which sepa
 rates a superconducting phase coexisting with CDW from a pure superconduct
 ing phase. In both phases superconductivity has a phonon-mediated BCS $s$-
 wave character. Together with the related isoelectronic compound Ca$_{3}$I
 r$_{4}$Sn$_{13}$ $[2]$\, this system shows that conventional BCS supercond
 uctors in the presence of competing orders may display behavior and charac
 teristics of unconventional superconductors.\n\n$[1]$ S. K. Goh\, et al.\,
  Phys. Rev. Lett. 114\, 097002 (2015)\n$[2]$ P. K. Biswas\, et al.\, Phys.
  Rev. B 92\, 195122 (2015)\n\n![(a) Depolarization rate and center field a
 s a function of temperature at ambient pressure for different chemical com
 positions. (b) Superconducting state parameters as a function of combined 
 chemical and hydrostatic pressure.][1]\n\n  [1]:https://drive.google.com/u
 c?id=1F3Lzv57gR69OI7FELh3q3IPZs0C6Pxep\n\nhttps://indico.stfc.ac.uk/event/
 53/contributions/3771/
LOCATION:Science and Technology Campus\, University of Parma
URL:https://indico.stfc.ac.uk/event/53/contributions/3771/
END:VEVENT
END:VCALENDAR