title: Effects of a collective spin resonance mode on the scanning tunneling microscopy spectra of d-wave superconductors.
abstract: A high-energy spin resonance mode is known to exist in many high-temperature superconductors. Motivated by recent scanning tunneling microscopy 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.
authors.affiliation: Theoretical Division, MS B262, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Jian-Xin
authors.initials: JX
authors.lastname: Zhu
authors.forename: Jun
authors.initials: J
authors.lastname: Sun
authors.forename: Qimiao
authors.initials: Q
authors.lastname: Si
authors.forename: A V
authors.initials: AV
authors.lastname: Balatsky