Metallic phase in lightly doped La2-xSrxCuO4 observed by electron paramagnetic resonance -: art. no. 017001

被引：31

作者：

Shengelaya, A

Bruun, M

Kochelaev, BI

Safina, A

Conder, K

Müller, KA

机构：

[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[2] Kazan VI Lenin State Univ, Dept Phys, Kazan 420008, Russia

[3] ETH, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[4] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.93.017001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the low doping range of x from 0.01 to 0.06 in La2-xSrxCuO4, a narrow electron paramagnetic resonance (EPR) line has been investigated. This line is distinct from the known broad line and both lines are due to probing Mn2+ ions. The narrow line is ascribed to metallic regions in the material, and its intensity increases exponentially upon cooling below similar to150 K. The activation energy deduced Delta=460(50) K is nearly the same as that found in the doped superconducting regime by Raman and neutron scattering. The intensity of the narrow EPR line follows the same temperature dependence as the in-plane resistivity anisotropy in lightly doped La2-xSrxCuO4 single crystals.

引用

页码：017001 / 1

页数：4

共 19 条

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