Electronically smecticlike liquid-crystal phase in a nearly half-doped manganite

Journal Article · Thu Dec 01 04:00:00 EST 2005 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.72.2· OSTI ID:20787736

Ye, F ^[1]; Fernandez-Baca, J A ^[1]; Pengcheng, Dai ^[2]; Lynn, J W ^[3]; Kawano-Furukawa, H ^[4]; Yoshizawa, H ^[5]; Tomioka, Y ^[6]; Tokura, Y ^[6]

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1. Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States)
2. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 (United States)
3. NIST Center for Neutron Research, Gaithersburg, Maryland 20899 (United States)
4. Department of Physics, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610 (Japan)
5. Neutron Science Laboratory, ISSP, University of Tokyo, Tokai, Ibaraki, 319-1106 (Japan)
6. Correlated Electron Research Center (CERC), Tsukuba 305-0046 (Japan)

We use neutron scattering to study the spin and charge-orbital ordering (CO-OO) in the nearly half-doped perovskite manganite Pr{sub 0.55}(Ca{sub 0.8}Sr{sub 0.2}){sub 0.45}MnO{sub 3} (PCSMO). On cooling from room temperature, PCSMO first enters into a CO-OO state below T{sub CO} and then becomes a CE-type long-range ordered antiferromagnet below T{sub N}. At temperatures above T{sub N} but below T{sub CO} (T{sub N}<T<T{sub CO}), 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 smecticlike phase results directly from the spin-orbit interaction and demonstrates the presence of textured 'electronic soft' phases in doped Mott insulators.

• OSTI ID: 20787736
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 21 Vol. 72; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
ANTIFERROMAGNETIC MATERIALS
CALCIUM COMPOUNDS
DOPED MATERIALS
FERROMAGNETIC MATERIALS
L-S COUPLING
LIQUID CRYSTALS
MANGANATES
NEEL TEMPERATURE
NEUTRON DIFFRACTION
PEROVSKITE
PRASEODYMIUM COMPOUNDS
SPIN
STRONTIUM COMPOUNDS
TEMPERATURE DEPENDENCE
TEXTURE