Skyrmions in a Doped Antiferromagnet

Details Skyrmions in a Doped Antiferromagnet Skyrmions in a Doped Antiferromagnet

2010-06-09

arxiv.org/abs/1006.1891v2

Phys. Rev. Lett. 106, 227206 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

4+ pages, 3 figures (some low resolution), supplementary material (3 pages); discussion expanded, references added; as publish

Scientific paper

10.1103/PhysRevLett.106.227206

Magnetization and magnetoresistance have been measured in insulating
antiferromagnetic La_{2}Cu_{0.97}Li_{0.03}O_{4} over a wide range of
temperatures, magnetic fields, and field orientations. The magnetoresistance
step associated with a weak ferromagnetic transition exhibits a striking
nonmonotonic temperature dependence, consistent with the presence of skyrmions.

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