Melting of Quasi-Two-Dimensional Charge Stripes inLa5/3Sr1/3NiO4

1997/06/11 by S.-H. Lee, S. -H. Lee, S-W. Cheong · 12 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.79.2514

10 pages, RevTex, 4 figures available on request to [email protected]

arxiv created 1997/06/11 · openalex publication_date 1997/09/29 · arxiv updated 2009/11/30 · openalex created_date 2017/03/16 · openalex updated_date 2026/07/28

Abstract

Commensurability effects for nickelates have been studied, for the first time, by neutron scattering on La_5/3Sr_1/3NiO₄. Upon cooling, this system undergoes three successive phase transitions associated with quasi-two-dimensional (2D) commensurate charge and spin stripe ordering in the NiO₂ planes. The two lower temperature phases are stripe lattice states with quasi-long-range in-plane charge correlation. When the lattice of 2D charge stripes melts, it goes through an intermediate glass state before becoming a disordered liquid state. This glass state shows short-range charge order without spin order, and may be called a ``stripe glass'' which resembles the hexatic/nematic state in 2D melting.

Citations

• The Physics of Liquid Crystals
• Ordering, metastability and phase transitions in two-dimensional systems

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