Anomalous doping effect on the superconducting state in CeCoIn$_5$ at high magnetic fields

Details Anomalous doping effect on the superconducting state in CeCoIn$_5$ at high magnetic fields Anomalous doping effect on the superconducting state in CeCoIn$_5$ at high magnetic fields

2010-09-15

arxiv.org/abs/1009.2910v2

Physics

Condensed Matter

Strongly Correlated Electrons

accepted in PRB Rapid Communication

Scientific paper

10.1103/PhysRevB.82.220502

We investigated the effect of electron and hole doping on the high-field low-temperature superconducting state in CeCoIn$_5$ by measuring specific heat of CeCo(In$_{\rm 1-x}$M$_{\rm x}$)$_5$ 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 $T_c$ monotonically, $H_{c2}$ increases 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 $T_c$ and $H_{c2}$ decrease monotonically. The critical temperature for the high-field low-temperature superconducting state (so called {\it Q}-state) correlates with $H_{c2}$ and $T_c$, which we interpret in support of the superconducting origin of this state.

Affiliated with

Also associated with

No associations

Rating

Anomalous doping effect on the superconducting state in CeCoIn$_5$ at high magnetic fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Anomalous doping effect on the superconducting state in CeCoIn$_5$ at high magnetic fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous doping effect on the superconducting state in CeCoIn$_5$ at high magnetic fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-77312