TY  - JOUR
AU  - Rusydi, A.
AU  - Goos, A.
AU  - Binder, S.
AU  - Eich, A.
AU  - Botril, K.
AU  - Abbamonte, P.
AU  - Yu, X.
AU  - Breese, M. B. H.
AU  - Eisaki, H.
AU  - Fujimaki, Y.
AU  - Uchida, S.
AU  - Guerassimova, N.
AU  - Treusch, R.
AU  - Feldhaus, J.
AU  - Reininger, R.
AU  - Klein, M. V.
AU  - Rübhausen, M.
TI  - Electronic Screening-Enhanced Hole Pairing in Two-Leg Spin Ladders Studied by High-Resolution Resonant Inelastic X-Ray Scattering at Cu M Edges
JO  - Physical review letters
VL  - 113
IS  - 6
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - PUBDB-2015-00660
SP  - 067001
PY  - 2014
N1  - OA
AB  - We study the electronic screening mechanisms of the effective Coulomb on-site repulsion in hole-doped Sr14Cu24O41 compared to undoped La6Ca8Cu24O41 using polarization dependent high-resolution resonant inelastic x-ray scattering at Cu M edges. By measuring the energy of the effective Coulomb on-site repulsion and the spin excitations, we estimate superexchange and hopping matrix element energies along rungs and legs, respectively. Interestingly, hole doping locally screens the Coulomb on-site repulsion reducing it by as much as 25
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000340034500009
C6  - pmid:25148343
DO  - DOI:10.1103/PhysRevLett.113.067001
UR  - https://bib-pubdb1.desy.de/record/206134
ER  -