Anomalous Suppression of the Vortex Hall Current in Underdoped YBa_(2)Cu_(3)O_(x)  

作　　者：XU Zhu-An HUANG You-Xing ZHAO Yan-Li ZHANG Xuan-Jia JIAO Zheng-Kuan 许祝安;黄有兴;赵彦立;张宣嘉;焦正宽(Department of Physics,Zhejiang University,Hangzhou 310027)

机构地区：[1]Department of Physics,Zhejiang University,Hangzhou 310027

出　　处：《Chinese Physics Letters》2001年第9期1258-1260,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.19904009;the Ministry of Science and Technology of China(NKBRSF-G19990646).

摘　　要：The transport properties of underdoped YBa_(2)Cu_(3)O_(x)(YBCO) crystals with x = 6.95, 6.80 and 6.66 were measured and the effect of the pseudogap on the Hall conductivity was studied. In the normal state, the Hall angle remains unperturbed at the crossover temperature of resistivity for the underdoped samples. An anomalous suppression of the vortex Hall current was observed near Tc and the contribution of the vortices to the Hall current is absent above 40 K in 60 K YBCO (x = 6.66).

关 键 词：VORTEX RESISTIVITY CROSSOVER 

分 类 号：O51[理学—低温物理]