摘要
研究了典型的层状钙钛矿结构超导单晶Sr2 RuO4在c方向的磁阻 (Δρ ρ0 ) (H∥ab ,J∥c)的变化 .实验发现 ,磁阻表现出强烈的各向异性 ,并且随着温度T的降低 ,磁阻效应越明显 ;当在平面ab内旋转磁场H的方向时 ,磁阻成周期性变化 ;实验表明 ,磁场沿 (110 )方向时 ,出现磁阻的极大值 .分别从Sr2 RuO4的费米面的各向异性、载流子散射率、c方向能带色散的各向异性等方面来解释这些输运性质 .
We studied the c-axis magnetoresistance (H∥ab,J⊥c) of a typical layered perovskite superconducting single crystals Sr 2RuO 4.It is shown that the magnetoresistance is anisotropic and strongly temperature dependent.When rotating the direction of magnetic field in the ab-plane, the magnetoresistance varies periodically, and the maximum appears as the applied magnetic field is in the (110) direction.We analyze this transport property with respect to the Fermi surface anisotropy,the quasiparticle scattering rate anisotropy and the band dispersion anisotropy, respectively.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第9期1824-1828,共5页
Acta Physica Sinica
基金
国家自然科学基金 (批准号 :197340 0 1)资助的课题&&