| Autor: |
Qian Yitai, Fang Minghu, Sun Dunming, Zhao Zhanchun, Xu Zhu-An, Chen Zuyao, Zhang Qirui, Xia Jiansheng |
| Rok vydání: |
1989 |
| Předmět: |
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| Zdroj: |
Acta Physica Sinica. 38:313 |
| ISSN: |
1000-3290 |
| DOI: |
10.7498/aps.38.313 |
| Popis: |
We report the experimental results on anisotropy of the normal state resistivity, transition temperature and magnetic transition in single crystal GdBa2Cu3O7-δ. We find that both ρ∥ and ρ⊥ are fitted very well to the Anderson-Zou relationship ρ = A/T + BT, except near Tc where fluctuation enhanced conductance becomes prominent. The striking difference in A, B of two directions suggests that charge transport proceeds by different mechanisms in the two directions, that the system exhibit remarkable two-dimensional character in the normal stete. The superconductivity in the c direction is weaker than that in ab plane: Tce⊥ is 2K lower than Tce∥. a. c. magnetic shielding effect when H∥ab plane is only 76% of that as H⊥ab plane. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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