1997/11/14 by G. Blumberg, M. V. Klein, S-W. Cheong · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Charge (physics) #Charge ordering #Chemistry #Condensed matter physics #Magnetic and transport properties of perovskites and related materials #Materials science #Non-blocking I/O #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Superlattice #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.80.564
5 pages, 4 EPS figures; to appear in Phys. Rev. Lett
arxiv created 1997/11/14 · openalex publication_date 1998/01/19 · arxiv updated 2009/11/30 · openalex created_date 2019/07/30 · openalex updated_date 2026/08/05
For La1(2)/(3)Sr(1)/(3)NiO4, a commensurately doped Mott-Hubbard system, charge and spin ordering in a stripe phase has been investigated by phonon and magnetic Raman scattering. Formation of a superlattice and an opening of a pseudogap in the electron-hole excitation spectra as well as two types of double-spin excitations---within the antiferromagnetic domain and across the domain wall---are observed below the charge ordering transition. The temperature dependence suggests that the spin ordering is driven by charge ordering and that fluctuating stripes persist above the ordering transition.