HALL-EFFECT STUDIES OF BI2SR2CUOX CRYSTALS

作者：HOU, XH^*; LI, JW; ZHANG, JL; GUO, SQ; YIN, B; XIONG, JW; DONG, C; ZHAO, ZX

来源：Physica C-Superconductivity and Its Applications, 1994, 235: 1387-1388.

DOI：10.1016/0921-4534(94)91918-6

We have investigated the temperature dependencies of the in-plane resistivity and the Hall coefficient in Bi2Sr2CuOX crystals across the metal-insulator (MI) transition. In the insulator crystal at low temperature (32 K<T(115K), the conduction is governed by a two-dimensional variable-range-hopping mechanism. In the superconducting crystal the Hall coefficient Rh exhibit a characteristic maximum at about 90 K, and after MI transition the maximum disappeared. We believe that the maximum in Rh-T curve represents the common feature of all the high Tc superconductors.

• 出版日期1994-12
• 单位中国科学院物理研究所