2007/11/30 by Mats Granath, M. Granath · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.77.165128
published as Phys. Rev. B 77, 165128 (2008) · 9 pages, 5 figures, added references and extended discussion of Hall coefficient for stripe ordered system; v3 final, improved figures
openalex publication_date 2008/04/21 · arxiv created 2008/04/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
For a doped antiferromagnet with short-range spin-stripe correlations and long-range charge-stripe order, we find that the manifestation of charge order abruptly changes as a function of momentum along the Fermi surface. The disorder averaged local density of states is almost perfectly homogeneous when integrated only over states that contribute to the ``nodal'' spectral weight, whereas it displays long-range charge-stripe order when integrated only over states that contribute to the ``antinodal'' spectral weight. An effectively two dimensional isotropic nodal liquid can thus coexist with static charge stripes provided there is no static spin order. We also study commensurate spin- and charge-stripe ordered systems wherein the Fermi surface consists of a nodal hole pocket and an open ``stripe band'' section. Due to the stripe order, the relation between hole density and size of a pocket will be reduced compared to that of a paramagnet by factors of 2 for even charge period and 4 for odd charge period, and we find an estimated upper limit on the area fraction of a hole pocket of 1.6% for charge-period four and 4% for charge-period five. We also discuss why electron pockets are not expected for a stripe ordered system and show that the open Fermi surface section may be electronlike with a negative Hall coefficient.