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The Interplay of the Charge and Vortex Subsystems in Anisotropic Electron-Doped Superconductor Nd2 – xCexCuO4
Physics of Metals and Metallography ( IF 1.1 ) Pub Date : 2022-03-29 , DOI: 10.1134/s0031918x22020053
A. S. Klepikova 1 , O. E. Petukhova 1 , M. R. Popov 1 , N. G. Shelushinina 1 , T. B. Charikova 1
Affiliation  

Abstract

This paper presents the results of studies of the temperature and field dependences of the resistivity tensor of the electron-doped superconductor Nd2 – xCexCuO4 (0.12 ≤ x ≤ 0.20) in the CuO2 conducting planes and in the direction perpendicular to the CuO2 planes. These results are successfully interpreted within the concept of quasi-two-dimensionality of the systems with high metallic conductivity in the CuO2 conducting planes (dρab/dT > 0) and nonmetallic temperature dependence of conductivity in the direction of the c‑axis (dρc/dT < 0) due to incoherent tunneling and thermal activation through barriers between the CuO2 conducting layers. The specificities of the behavior of the magnetoresistivity ρxx(B) and the Hall resistivity ρxy(B) in the mixed (resistive) state are associated with the dynamics of the transverse motion of Abrikosov and Josephson vortices in the flux flow regime in crossed electric and magnetic fields.



中文翻译:

各向异性电子掺杂超导体 Nd2 – xCexCuO4 中电荷和涡旋子系统的相互作用

摘要

本文介绍了电子掺杂超导体 Nd 2 – x Ce x CuO 4 (0.12 ≤ x ≤ 0.20) 在 CuO 2导电平面和垂直于CuO 2平面。这些结果在 CuO 2导电平面中具有高金属电导率 (dρ ab /d T > 0) 和c轴方向上电导率的非金属温度依赖性的系统的准二维概念内成功解释(dρ c /dT < 0)由于非相干隧穿和通过CuO 2导电层之间的势垒的热激活。混合(电阻)状态下磁阻率 ρ xx ( B ) 和霍尔电阻率 ρ xy ( B ) 的特性与交叉磁通流态中 Abrikosov 和 Josephson 涡旋的横向运动动力学有关电场和磁场。

更新日期:2022-03-29
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