Signature of a collective spin mode in the local tunneling spectra of a d-wave superconductor

Jung Hoon Han

doi:10.1103/PhysRevB.67.094506

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Signature of a collective spin mode in the local tunneling spectra of a d-wave superconductor

Jung Hoon Han

DOI 10.1103/PhysRevB.67.094506 · Physical Review B

T1

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Abstract

We consider the influence of magnetic excitations on the local density of states in the d-wave superconductor. The magnetic susceptibility is calculated within the renormalized t−t′−J model while its influence on the quasiparticle self-energy is considered in the framework of a model proposed by Polkovnikov et al. [Phys. Rev. B 65, 220509 (2002)]. We find the local density of states (LDOS) is spatially modulated, with the associated wave vectors both along (π,0) and (π,π) directions and their magnitudes changing as the energy is varied. The calculated LDOS is compared with the recent scanning tunneling microscope data on bismuth-oxide superconductor.

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