Defect and anisotropic gap-induced quasi-one-dimensional modulation of the local density of states of YBa2Cu3O7−δ

Khee Kyun Voo, Hong-Yi Chen, C. Wu

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2 Citations (Scopus)

Abstract

Motivated by recent angle-resolved photoemission spectroscopy (ARPES) measurement that superconducting YBa2Cu3O7−δ (YBCO) is consistent with a dx2−y2+s-symmetry gap, we show possible defect-induced quasi-one-dimensional modulations of the local density of states in YBCO. These stripelike structures are more conspicuous at higher measuring biases of the scanning tunneling microscopy (STM). Observation of these STM spectra would provide a unified picture of anisotropic gap on YBCO among STM, ARPES, and inelastic neutron scattering measurements.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number1
DOIs
Publication statusPublished - 2003 Jan 1

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Scanning tunneling microscopy
scanning tunneling microscopy
Modulation
Photoelectron spectroscopy
modulation
Defects
defects
photoelectric emission
Inelastic neutron scattering
spectroscopy
inelastic scattering
neutron scattering
symmetry
barium copper yttrium oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "Motivated by recent angle-resolved photoemission spectroscopy (ARPES) measurement that superconducting YBa2Cu3O7−δ (YBCO) is consistent with a dx2−y2+s-symmetry gap, we show possible defect-induced quasi-one-dimensional modulations of the local density of states in YBCO. These stripelike structures are more conspicuous at higher measuring biases of the scanning tunneling microscopy (STM). Observation of these STM spectra would provide a unified picture of anisotropic gap on YBCO among STM, ARPES, and inelastic neutron scattering measurements.",
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AB - Motivated by recent angle-resolved photoemission spectroscopy (ARPES) measurement that superconducting YBa2Cu3O7−δ (YBCO) is consistent with a dx2−y2+s-symmetry gap, we show possible defect-induced quasi-one-dimensional modulations of the local density of states in YBCO. These stripelike structures are more conspicuous at higher measuring biases of the scanning tunneling microscopy (STM). Observation of these STM spectra would provide a unified picture of anisotropic gap on YBCO among STM, ARPES, and inelastic neutron scattering measurements.

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