ANISOTROPY AND DOUBLE SIGN CHANGE OF THE HALL RESISTIVITY IN YBA2CU4O8 SINGLE-CRYSTALS

被引：17
|
作者：
SCHOENES, J
KALDIS, E
KARPINSKI, J
机构：
[1] Laboratorium für Festkörperphysik, Eidgenössische Technische Hochschule-Zürich
来源：
PHYSICAL REVIEW B | 1993年 / 48卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.48.16869
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The electrical resistivity and the Hall effect have been measured on oriented single crystals of YBa2Cu4O8 in magnetic fields up to 10 T and temperatures from 2 to 300 K. In the normal state the anisotropic, transverse relaxation rates determined from the Hall angle for I parallel-to a and b agree with those obtained from NQR for Cu(2) and Cu(1), respectively, and indicate the formation of a spin gap. In the mixed phase the Hall effect changes its sign twice, but only when I is parallel to the chains. An interpretation in terms of a two-band model is given.
引用
收藏
页码：16869 / 16872
页数：4
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