Transport properties of the layered Rh oxide K_0.49RhO_2

Details Transport properties of the layered Rh oxide K_0.49RhO_2 Transport properties of the layered Rh oxide K_0.49RhO_2

2009-11-11

arxiv.org/abs/0911.2156v1

Physics

Condensed Matter

Strongly Correlated Electrons

3 figures, submitted to PRB

Scientific paper

We report measurements and analyses of resistivity, thermopower and Hall coefficient of single-crystalline samples of the layered Rh oxide K_0.49RhO_2. The resistivity is proportional to the square of temperature up to 300 K, and the thermopower is proportional to temperature up to 140 K. The Hall coefficient increases linearly with temperature above 100 K, which is ascribed to the triangular network of Rh in this compound. The different transport properties between Na_xCoO_2 and K_0.49RhO_2 are discussed on the basis of the different band width between Co and Rh evaluated from the magnetotransport.

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