Heat transport of electron-doped Cobaltates

Details Heat transport of electron-doped Cobaltates Heat transport of electron-doped Cobaltates

2006-01-15

arxiv.org/abs/cond-mat/0601320v2

Commun. Theor. Phys. 46, pp. 171-174 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 1 fig, corrected typos, accepted for publication in Commun. Theor. Phys

Scientific paper

Within the t-J model, the heat transport of electron-doped cobaltates is studied based on the fermion-spin theory. It is shown that the temperature dependent thermal conductivity is characterized by the low temperature peak located at a finite temperature. The thermal conductivity increases monotonously with increasing temperature at low temperatures T $<$ 0.1$J$, and then decreases with increasing temperature for higher temperatures T $>$ 0.1$J$, in qualitative agreement with experimental result observed from Na$_{x}$CoO$_{2}$ .

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