In-plane conduction and c -axis polarization in the misfit-layered oxide [ Bi 2 Ca 2 O 4 ] q CoO 2
In-plane conduction and c -axis polarization in the misfit-layered oxide [ Bi 2 Ca 2 O 4 ] q CoO 2
复制标题
失配层状氧化物 [ Bi 2 Ca 2 O 4 ] q CoO 2 中的面内传导和 c 轴极化
DOI：
10.1103/physrevb.78.073101
复制
发表时间：
2008
影响因子：
3.7
通讯作者：
N. Kobayashi
中科院分区：
文献类型：
--
作者：
M. Maki;Kohei Machida;Tadashi Mori;T. Nishizaki;N. Kobayashi
我们用低频介电测量研究了失配层状氧化物${[{\text{Bi}}_{2}{\text{Ca}}_{2}{\text{O}}_{4}]}_{q}{\text{CoO}}_{2}$.中各向异性电荷输运的演化在60Text{K}以上，面内直流电导率服从Arrhenius定律，介电极化沿c方向发生。我们指出，这种c轴偏振是由于被激活的载流子被限制在$ab平面上。
We have used low-frequency dielectric measurements to study the evolution of anisotropic charge transport in misfit-layered oxides ${[{\text{Bi}}_{2}{\text{Ca}}_{2}{\text{O}}_{4}]}_{q}{\text{CoO}}_{2}$. Above $\ensuremath{\sim}60\text{ }\text{K}$, the in-plane dc conductivity obeys the Arrhenius law and the dielectric polarization occurs along the $c$ direction. We point out that this $c$-axis polarization is attributed to the activated carrier which is confined to $ab$ plane.