Nodeless vs nodal order parameters in LiFeAs and LiFeP superconductors

Details Nodeless vs nodal order parameters in LiFeAs and LiFeP superconductors Nodeless vs nodal order parameters in LiFeAs and LiFeP superconductors

2011-07-22

arxiv.org/abs/1107.4505v1

Phys. Rev. Lett. 108, 047003 (2012)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.108.047003

High-precision measurements of magnetic penetration depth $\lambda$ in clean single crystals of LiFeAs and LiFeP superconductors reveal contrasting low-energy quasiparticle excitations. In LiFeAs the low-temperature $\lambda(T)$ shows a flat dependence indicative of a fully gapped state, which is consistent with previous studies. In contrast, LiFeP exhibits a $T$-linear dependence of superfluid density $\propto \lambda^{-2}$, indicating a nodal superconducting order parameter. A systematic comparison of quasiparticle excitations in the 1111, 122, and 111 families of iron-pnictide superconductors implies that the nodal state is induced when the pnictogen height from the iron plane decreases below a threshold value of $\sim 1.33$\,\AA.

Affiliated with

Also associated with

No associations

Rating

Nodeless vs nodal order parameters in LiFeAs and LiFeP superconductors 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 Nodeless vs nodal order parameters in LiFeAs and LiFeP superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nodeless vs nodal order parameters in LiFeAs and LiFeP superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-676495