Physics – Condensed Matter – Superconductivity
Scientific paper
2003-05-08
Phys. Rev. Lett. 90, 247003 (2003)
Physics
Condensed Matter
Superconductivity
4 pages, 5 figures, accepted for publication in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.90.247003
Detailed behavior of the magnetoresistance (MR) is studied in lightly doped antiferromagnetic La_{1.99}Sr_{0.01}CuO_{4}, where, thanks to the weak ferromagnetic moment due to spin canting, the antiferromagnetic (AF) domain structure can be manipulated by the magnetic field. The MR behavior demonstrates that CuO_2 planes indeed contain anti-phase AF domain boundaries in which charges are confined, forming anti-phase stripes. The data suggest that a high magnetic field turns the anti-phase stripes into in-phase stripes, and the latter appear to give better conduction than the former, which challenges the notion that the anti-phase character of stripes facilitates charge motion.
Ando Yoichi
Komiya Seiki
Lavrov Nicolay A.
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