COMPETITION BETWEEN STRUCTURAL AND SUPERCONDUCTING TRANSITION IN (LAND)-SR-CU-O

被引：57
作者：
BUCHNER, B
CRAMM, M
BRADEN, M
BRAUNISCH, W
HOFFELS, O
SCHNELLE, W
MULLER, R
FREIMUTH, A
SCHLABITZ, W
HEGER, G
KHOMSKII, DI
WOHLLEBEN, D
机构：
[1] CENS,LAB LEON BRILLOUIN,CEA,CNRS,F-91191 GIF SUR YVETTE,FRANCE
[2] PN LEBEDEV PHYS INST,MOSCOW,RUSSIA
来源：
EUROPHYSICS LETTERS | 1993年 / 21卷 / 09期
关键词：
PEROVSKITE PHASE SUPERCONDUCTORS; GENERAL PROPERTIES; CRYSTALLOGRAPHIC ASPECTS OF POLYMORPHIC AND ORDER-DISORDER TRANSFORMATIONS;
D O I：
10.1209/0295-5075/21/9/013
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Experimental evidence is presented for a competition between the superconducting and a structural transition in La1.85-xNdxSr0.15CuO4 as a function of the Nd content. At high Nd concentration (x greater-than-or-equal-to 0.18) a discontinuous, first-order structural transition is found, which destroys superconductivity and has a drastic influence on the normal-state transport properties. At lower Nd concentration (x < 0.18) a sharp superconducting transition occurs, which seems to suppress the structural phase transition.
引用
收藏
页码：953 / 958
页数：6
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