Transport properties of the heavy fermion superconductor PrOs$_{4}$Sb$_{12}$

Details Transport properties of the heavy fermion superconductor PrOs$_{4}$Sb$_{12}$ Transport properties of the heavy fermion superconductor PrOs$_{4}$Sb$_{12}$

2005-04-29

arxiv.org/abs/cond-mat/0504780v2

Phys. Rev. B 72 (2005) 014519 (6 pages)

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 10 figures, to appear in Physical Review B

Scientific paper

10.1103/PhysRevB.72.014519

We have measured the electrical resistivity, thermoelectric power, Hall coefficient, and magnetoresistance (MR) on single crystals of PrOs$_{4}$Sb$_{12}$, LaOs$_{4}$Sb$_{12}$ and NdOs$_{4}$Sb$_{12}$. All the transport properties in PrOs$_{4}$Sb$_{12}$ are similar to those in LaOs$_{4}$Sb$_{12}$ and NdOs$_{4}$Sb$_{12}$ at high temperatures, indicating the localized character of 4$f$-electrons. The transverse MR both in LaOs$_{4}$Sb$_{12}$ and PrOs$_{4}$Sb$_{12}$ tends to saturate for wide field directions, indicating these compounds to be uncompensated metals with no open orbit. We have determined the phase diagram of the field induced ordered phase by the MR measurement for all the principle field directions, which indicates an unambiguous evidence for the $\Gamma_{\rm 1}$ singlet crystalline electric field ground state.

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