The Interplay of the Charge and Vortex Subsystems in Anisotropic Electron-Doped Superconductor Nd.sub.2 -.sub.xCe.sub.xCuO.sub.4

• Published in: Physics of metals and metallography Vol. 123; no. 2; p. 114
• Main Authors: Klepikova, A. S, Petukhova, O. E, Popov, M. R, Shelushinina, N. G, Charikova, T. B
• Format: Journal Article
• Language: English
• Published: Springer 01.02.2022
• Subjects: Anisotropy; Electric properties; Electrons; Magnetic fields; Superconductors
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X22020053

This paper presents the results of studies of the temperature and field dependences of the resistivity tensor of the electron-doped superconductor Nd.sub.2 -.sub.xCe.sub.xCuO.sub.4 (0.12 [less than or equal to] x [less than or equal to] 0.20) in the CuO.sub.2 conducting planes and in the direction perpendicular to the CuO.sub.2 planes. These results are successfully interpreted within the concept of quasi-two-dimensionality of the systems with high metallic conductivity in the CuO.sub.2 conducting planes (d[rho].sub.ab/dT > 0) and nonmetallic temperature dependence of conductivity in the direction of the câaxis (d[rho].sub.c/dT < 0) due to incoherent tunneling and thermal activation through barriers between the CuO.sub.2 conducting layers. The specificities of the behavior of the magnetoresistivity [rho].sub.xx(B) and the Hall resistivity [rho].sub.xy(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.