Energy-dependent modulations in the local density of states of the cuprate superconductors

Degang Zhang; C. S. Ting

doi:10.1103/PhysRevB.67.100506

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Energy-dependent modulations in the local density of states of the cuprate superconductors

Degang Zhang, C. S. Ting

DOI 10.1103/PhysRevB.67.100506 · Physical Review B

T1

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Abstract

Motivated by the recent scanning tunneling microscopy (STM) experiment [J. E. Hoffman et al., Science 297, 1148 (2002)], we investigate the energy-dependent modulation of local density of states induced by a weak and extended defect in a d-wave superconductor. The Fourier component of the local density of states is calculated up to the first order in the defect parameters. Our numerically obtained image maps together with the energy-dependent charge modulation wave vectors at different dopings exhibit the essential features as those measured by the experiment. We also predict new modulation wave vectors in the first Brillouin zone. Hopefully, they could be verified by future STM experiments.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown