1998/12/04 by Hiroyuki Yamase, Hiroshi Kohno, Hidetoshi Fukuyama +1 · 1 citation
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1143/jpsj.68.1082
published as J. Phys. Soc. Jpn. 68, 1082 (1999) · 10 pages, submitted to J. Phys. Soc. Jpn
arxiv created 1998/12/04 · openalex publication_date 1999/04/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In the vicinity of hole density, 1/8, La-based high-Tc superconductors exhibit long-range order of incommensurate antiferromagnetism (IC-AF). Motivated by this observation, we explore the possible stabilization of IC-AF ordering due to the existence of static charge density modulation (CDM). We use Ginzburg-Landau free energy based on the mean field theory of the t-J model. It is shown numerically that three kinds of CDM including a stripe pattern can stabilize static IC-AF ordering. We also argue that such CDMs can cause the saturation of the degree of incommensurability (η) as a function of hole density for IC-AF fluctuation. In our framework a principal effect of low-temperature tetragonal (LTT) structure is just to increase η of IC-AF slightly larger only for the stripe pattern.