Defect and anisotropic gap induced quasi-one-dimensional modulation of local density of states in YBa$_2$Cu$_3$O$_{7-δ}$

Details Defect and anisotropic gap induced quasi-one-dimensional modulation of local density of states in YBa$_2$Cu$_3$O$_{7-δ}$ Defect and anisotropic gap induced quasi-one-dimensional modulation of local density of states in YBa$_2$Cu$_3$O$_{7-δ}$

2003-02-24

arxiv.org/abs/cond-mat/0302473v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.68.012505

Motivated by recent angle-resolved photoemission spectroscopy (ARPES) measurement that superconducting YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO) exhibits a $d_{x^2-y^2} + s$-symmetry gap, we show possible quasi-one-dimensional modulations of local density of states in YBCO. These aniostropic gap and defect induced stripe structures are most conspicuous at higher biases and arise due to the nesting effect associated with a Fermi liquid. Observation of these spectra by scanning tunneling microscopy (STM) would unify the picture among STM, ARPES, and inelastic neutron scattering for YBCO.

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