Electronically smectic-like phase in a nearly half-doped manganite

F. Ye; J. A. Fernandez-Baca; Pengcheng Dai; J. W. Lynn; H. Kawano-Furukawa; H. Yoshizawa; Y. Tomioka; Y. Tokura

doi:10.1103/PhysRevB.72.212404

paper

Electronically smectic-like phase in a nearly half-doped manganite

arXiv:cond-mat/0505255 · doi:10.1103/PhysRevB.72.212404

Abstract

We use neutron scattering to study the spin and charge/orbital ordering (CO-OO) in the nearly half-doped perovskite manganite $P r_{0.55} (C a_{0.8} S r_{0.2})_{0.45} M n O_{3}$ (PCSMO). On cooling from room temperature, PCSMO first enters into a CO-OO state below $T_{C O}$ and then becomes a CE-type long-range ordered antiferromagnet below $T_{N}$ . At temperatures above $T_{N}$ but below $T_{C O}$ ( $T_{N} < T < T_{C O}$ ), the spins in PCSMO form highly anisotropic smectic liquid-crystal-like texture with ferromagnetic (FM) quasi-long-range ordered one-dimensional zigzag chains weakly coupled antiferromagnetically. Such a magnetic smectic-like phase results directly from the spin-orbit interaction and demonstrates the presence of textured `electronic soft' phases in doped Mott insulators.

4 pages, 4 figures. Changed content

Electronically smectic-like phase in a nearly half-doped manganite

Abstract

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