Origin of large thermopower in LiRh$_2$O$_4$

Details Origin of large thermopower in LiRh$_2$O$_4$ Origin of large thermopower in LiRh$_2$O$_4$

2008-06-16

arxiv.org/abs/0806.2506v2

Phys. Rev. B 78, 115121 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 5 figures

Scientific paper

Motivated by the newly synthesized mixed-valent spinel LiRh$_2$O$_4$ for which a large thermopower is observed in the metallic cubic phase above 230K [Okamoto {\it et al.} (arXiv:0806.2504)], we calculate the Seebeck coefficient by the combination of local density approximation and dynamical mean field theory (LDA+DMFT). The experimental values are well reproduced not only by LDA+DMFT but also by the less involved Boltzmann equation approach. A careful analysis of the latter shows unexpectedly that the origin of the large thermopower shares a common root with a very different oxide: Na$_x$CoO$_2$. We also discuss how it is possible to further increase the powerfactor of LiRh$_2$O$_4$ through doping, which makes the material even more promoising for technological applications.

Affiliated with

Also associated with

No associations

Rating

Origin of large thermopower in LiRh$_2$O$_4$ 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 Origin of large thermopower in LiRh$_2$O$_4$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Origin of large thermopower in LiRh$_2$O$_4$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-91542