A new heavy fermion superconductor: the filled skutterudite compound PrOs$_4$Sb$_{12}$

Details A new heavy fermion superconductor: the filled skutterudite compound PrOs$_4$Sb$_{12}$ A new heavy fermion superconductor: the filled skutterudite compound PrOs$_4$Sb$_{12}$

2003-03-19

arxiv.org/abs/cond-mat/0303370v1

Acta Physica Polonica B v. 34, 919 (2003)

Physics

Condensed Matter

Superconductivity

12 pages, 6 figures, presented at the Strongly Correlated Electron Systems Conference, Krakow, 2002

Scientific paper

The filled skutterudite compound \PrOsSb{} exhibits superconductivity below a critical temperature $T_\mathrm{c} = 1.85$ K that develops out of a nonmagnetic heavy Fermi liquid with an effective mass $m^{*} \approx 50 m_\mathrm{e}$, where $m_\mathrm{e}$ is the free electron mass. Analysis of magnetic susceptibility, specific heat, electrical resistivity and inelastic neutron scattering measurements within the context of a cubic crystalline electric field yields a Pr$^{3+}$ energy level scheme that consists of a $\Gamma_{3}$ nonmagnetic doublet ground state that carries an electric quadrupole moment, a low lying $\Gamma_{5}$ triplet excited state at $\sim 10$ K, and $\Gamma_{4}$ triplet and $\Gamma_{1}$ singlet excited states at much higher temperatures. The superconducting state appears to be unconventional and to consist of two distinct superconducting phases. An ordered phase of magnetic or quadrupolar origin occurs at high fields and low temperatures, suggesting that the superconductivity may occur in the vicinity of a magnetic or electric quadrupolar quantum critical point.

Affiliated with

Also associated with

No associations

Rating

A new heavy fermion superconductor: the filled skutterudite compound PrOs$_4$Sb$_{12}$ 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 A new heavy fermion superconductor: the filled skutterudite compound PrOs$_4$Sb$_{12}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new heavy fermion superconductor: the filled skutterudite compound PrOs$_4$Sb$_{12}$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-17246