Effects of a Collective Spin Resonance Mode on the STM Spectra of D-Wave Superconductors

Details Effects of a Collective Spin Resonance Mode on the STM Spectra of D-Wave Superconductors Effects of a Collective Spin Resonance Mode on the STM Spectra of D-Wave Superconductors

2003-02-24

arxiv.org/abs/cond-mat/0302494v3

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures; typos removed; to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.92.017002

A high-energy spin resonance mode is known to exist in many high-temperature superconductors. Motivated by recent scanning tunneling microscopy (STM) experiments in superconducting Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$, we study the effects of this resonance mode on the local density of states (LDOS). The coupling between the electrons in a d-wave superconductor and the resonance mode produces high-energy peaks in the LDOS, which displays a two-unit-cell periodic modulation around a nonmagnetic impurity. This suggests a new means to not only detect the dynamical spin collective mode but also study its coupling to electronic excitations.

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