title: Topological scenario for stripe formation in manganese oxides
abstract: 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 e(g) electron parallel transported through Jahn-Teller centers, along zigzag one-dimensional paths in an antiferromagnetic environment of t(2g) 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.
authors.affiliation: National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306 and Institute for Solid State Physics, University of Tokyo, 7-22-1 Roppongi, Minato-ku, Tokyo 106-8666, Japan.
authors.initials: T
authors.lastname: Hotta
authors.initials: Y
authors.lastname: Takada
authors.initials: H
authors.lastname: Koizumi
authors.initials: E
authors.lastname: Dagotto