Temperature Dependence of Some Fundamental Physical Quantities in YBa2Cu3O7
- 1 October 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (10A) , L1910-1912
- https://doi.org/10.1143/jjap.27.l1910
Abstract
The resistivity and Hall coefficient of YBa2Cu3O7 were measured as a function of temperature. The data obtained were analyzed with a conductivity model of a diffusion type: σ x x =n e 2 D/2k B T. It is found that the carrier concentration n of hole type varies as n=n 0[1+αT] with the magnitude ratio αT>1 at T>T c, and consequently the diffusion constant D varies as D∝1/n. Therefore, in terms of the relaxation time τ, it becomes 1/τ=A T+B T 2. The origin of two terms is discussed.Keywords
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