Phys. Rev. Lett. 84, 2477–2480 (2000)Topological Scenario for Stripe Formation in Manganese OxidesReceived 16 August 1999; published in the issue dated 13 March 2000 The spin-charge-orbital complex structures of manganites are studied using topological concepts. The key quantity is the “winding number” w associated with the Berry-phase connection of an eg electron parallel transported through Jahn-Teller centers, along zigzag one-dimensional paths in an antiferromagnetic environment of t2g spins. From these concepts, it is shown that the “bi-stripe” and “Wigner-crystal” states observed experimentally have different w's. Predictions for the spin structure of the charge-ordered states for heavily doped manganites are discussed. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.2477
DOI:
10.1103/PhysRevLett.84.2477
PACS:
71.70.Ej, 71.15.-m, 71.38.+i, 71.45.Lr
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