Skip to main content
eScholarship
Open Access Publications from the University of California

Anomalous effect of doping on the superconducting state of CeCoIn5in high magnetic fields

  • Author(s): Tokiwa, Y
  • Movshovich, R
  • Ronning, F
  • Bauer, ED
  • Bianchi, AD
  • Fisk, Z
  • Thompson, JD
  • et al.
Abstract

We investigated the effect of electron and hole doping on the high-field low-temperature superconducting state in CeCoIn5by measuring specific heat of CeCo (In1-xMx) 5 with M=Sn, Cd, and Hg and x up to 0.33% at temperatures down to 0.1 K and fields up to 14 T. Although both Cd and Hg doping (hole doping) suppresses the zero-field Tcmonotonically, Hc2increases with small amounts of doping and has a maximum around x=0.2% (M=Cd). On the other hand, with Sn doping (electron doping) both zero-field Tcand Hc2decrease monotonically. The critical temperature for the high-field low-temperature superconducting state correlates with Hc2and Tc, which we interpret in support of the superconducting origin of this state. © 2010 The American Physical Society.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View