The filled skutterudite CeOs$_{4}$As$_{12}$: a hybridization gap semiconductor

Details The filled skutterudite CeOs$_{4}$As$_{12}$: a hybridization gap semiconductor The filled skutterudite CeOs$_{4}$As$_{12}$: a hybridization gap semiconductor

2008-08-08

arxiv.org/abs/0808.1278v2

Physics

Condensed Matter

Strongly Correlated Electrons

Submitted to the Proceedings of the National Academy of Sciences of the United States of America

Scientific paper

10.1073/pnas.0808991105

X-ray diffraction, electrical resistivity, magnetization, specific heat, and thermoelectric power measurements are presented for single crystals of the new filled skutterudite compound {\CeOsAs}, which reveal phenomena that are associated with f - electron - conduction electron hybridization. Valence fluctuations or Kondo behavior dominates the physics down to $T$ $\sim$ 135 K. The correlated electron behavior is manifested at low temperatures as a hybridization gap insulating state. The small energy gap $\Delta$$_1$/k$_B$ $\sim$ 73 K, taken from fits to electrical resistivity data, correlates with the evolution of a weakly magnetic or nonmagnetic ground state, which is evident in the magnetization data below a coherence temperature $T$$_{coh}$ $\sim$ 45 K. Additionally, the low temperature electronic specific heat coefficient is small, $\gamma$ $\sim$ 19 mJ/mol K$^2$. Some results for the nonmagnetic analogue compound {\LaOsAs} are also presented for comparison purposes.

Affiliated with

Also associated with

No associations

Rating

The filled skutterudite CeOs$_{4}$As$_{12}$: a hybridization gap semiconductor 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 The filled skutterudite CeOs$_{4}$As$_{12}$: a hybridization gap semiconductor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The filled skutterudite CeOs$_{4}$As$_{12}$: a hybridization gap semiconductor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-30048