Negative out-of-plane magnetoresistance in Bi-2201: superconducting fluctuations or peculiarity of the normal state?

被引:1
|
作者
Lavrov, AN [1 ]
Ando, Y [1 ]
Ono, S [1 ]
机构
[1] Cent Res Inst Elect Power Ind, Komae, Tokyo 2018511, Japan
来源
PHYSICA C | 2000年 / 341卷
关键词
D O I
10.1016/S0921-4534(00)01427-1
中图分类号
O59 [应用物理学];
学科分类号
摘要
The out-of-plane magnetoresistance (MR) has been measured for Bi2Sr2-xLaxCuOy single crystals over a wide doping range from superconducting (SC) compositions with T-c similar or equal to 30 K to heavily underdoped non-SC ones. With decreasing hole doping, the temperature range where a considerable negative MR is observed shifts to lower T following T-c, and eventually the negative MR completely disappears together with SC. This observation clearly demonstrates that the negative out-of-plane MR and superconductivity are closely linked in the Bi-2201 system and it is T-c rather than the pseudogap formation temperature T* that sets the scale for this MR phenomenon.
引用
收藏
页码:1579 / 1580
页数:2
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