Competition and coexistence of antiferromagnetism and superconductivity in RBa2Cu3O6+x (R=Lu, Y) single crystals

被引：10
作者：
Lavrov, A. N. [1 ]
Kozeeva, L. P. [1 ]
Trunin, M. R. [2 ]
Zverev, V. N. [2 ]
机构：
[1] Russian Acad Sci, Inst Inorgan Chem, Novosibirsk 630090, Russia
[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Region, Russia
来源：
PHYSICAL REVIEW B | 2009年 / 79卷 / 21期
关键词：
antiferromagnetism; barium compounds; doping profiles; high-temperature superconductors; hole density; lutetium compounds; magnetoresistance; Neel temperature; phase diagrams; superconducting transition temperature; yttrium compounds; RBA(2)CU(3)O(6+X) R=TM; PHASE BOUNDARIES; TEMPERATURE; RESISTIVITY; YBA2CU3O6+X; ANISOTROPY; DIAGRAM; LU;
D O I：
10.1103/PhysRevB.79.214523
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We use c-axis resistivity and magnetoresistance measurements to study the interplay between antiferromagnetic (AF) and superconducting (SC) ordering in underdoped RBa2Cu3O6+x (R=Lu, Y) single crystals. Both orders are found to emerge from an anisotropic three-dimensional metallic state upon which antiferromagnetism opposes superconductivity by driving the doped holes toward localization. Despite the competition, the superconductivity sets in before the AF order is completely destroyed and coexists with latter in a certain range of hole doping. We find also that strong magnetic fields affect the AF-SC interplay by both suppressing the superconductivity and stabilizing the Neacuteel order.
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页数：6
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