科研之友
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摘要
The electronic structure and the single-particle spectral density of a stripe array formed by ladder-like domain walls (DWs) and by antiferromagnetic (AF) domains of width two lattice spacings are computed and compared with angle-resolved photoemission spectroscopy (ARPES) spectra from some doped cuprates belonging to the 214 family of compounds. We assume that bond order is formed on legs in DWs and that the phase of the sublattice magnetization changes by pi across each DW. The intensity map plotted in the frame of reference momentum-energy reproduces quite well the ARPES spectra of Nd-doped La2-xSrxCuO4 (LSCO) systems obtained at the doping level of 15%. We consider this agreement as an argument for a scenario of coexisting bond-ordered regions and AF regions in the stripe phase of moderately doped cuprates.
- 出版日期2006-10-25
