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- Title
Anisotropic Low-Temperature in-Plane Magnetoresistance in Electron Doped Nd<sub>2 – </sub><sub>x</sub>Ce<sub>x</sub>CuO<sub>4 + δ</sub>.
- Authors
Ponomarev, A. I.; Sabirzyanova, L. D.; Ivanov, A. A.; Moskvin, A. S.; Panov, Yu. D.
- Abstract
Nominally electron doped antiferromagnetic tetragonal nonsuperconducting Nd2 – xCexCuO4 + δ(x=0.12) has been shown to manifest strong angular dependence of the in-plane magnetoresistance on the orientation of the external magnetic field within the ab plane in many aspects similar to that observed in hole doped YBa2Cu3O7 – δ and La2 – xSrxCuO4. Specific fourfold angular magnetoresistance anisotropy amounting to several percents was observed in oxygen annealed films at low temperatures and in an external magnetic field up to 5.5 T. The strong temperature dependence and fourfold symmetry observed in our sample points to a specific role of rare-earth (Nd) ions in magnetoresistance anisotropy. At low temperature T = 1.4 K, we observed the unusual transformation of magnetoresistance response with increasing the external magnetic field, which seems to be a manifestation of a combined effect of a crossover between first and second order spin-flop transitions and a field-dependent rare-earth contribution to quasiparticle magnetotransport. © 2005 Pleiades Publishing, Inc.
- Subjects
MAGNETORESISTANCE; ELECTRIC resistance; ELECTRONS; ANISOTROPY; MAGNETIC fields; PHYSICS
- Publication
JETP Letters, 2005, Vol 81, Issue 8, p394
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1951016