Speaker
Mr
Yi Tseng
(Paul Scherrer Institut)
Description
Quasi one-dimensional (1D) spin ladders host exotic low-energy excitations. Recently, susceptibility measurements suggested that Co doping alters the magnetism in the spin ladder of Sr14Cu24O41. We studied the Co impurity effects of Sr14Cu24O41 using Resonant Inelastic X-Ray Scattering (RIXS) at Cu L3- and O K-edges. Cu L3 RIXS has been shown to be a powerful probe of magnetic excitations in low-dimensional cuprates, and O K RIXS is capable of resolving charge dynamics in the self-hole doped Sr14Cu24O41. We observed a clear hardening and sharpening of the two-triplon continuum in the Co doped Sr14Cu24O41 ladders connected a reduced hole density.
Author
Mr
Yi Tseng
(Paul Scherrer Institut)
Co-authors
Eugenio Paris
(PSI)
Daniel McNally
(PSI)
Rabindranath Bag
(Indian Institute of Science Education and Research)
Surjeet Singh
(Indian Institute of Science Education and Research)
Henrik Rønnow
Thorsten Schmitt
(PSI)
