Hole-depletion of ladders in Sr${}_{14}$Cu${}_{24}$O${}_{41}$ induced by correlation effects

Abstract

The hole distribution in Sr${}_{14}$Cu${}_{24}$O${}_{41}$ is studied by low temperature polarization dependent O K Near-Edge X-ray Absorption Fine Structure measurements and state of the art electronic structure calculations that include core-hole and correlation effects in a mean-field approach. Contrary to all previous analysis, based on semi-empirical models, we show that correlations and antiferromagnetic ordering favor the strong chain hole-attraction. For the remaining small number of holes accommodated on ladders, leg-sites are preferred to rung-sites. The small hole affinity of rung-sites explains naturally the 1D - 2D cross-over in the phase diagram of (La,Y,Sr,Ca)${}_{14}$Cu${}_{24}$O${}_{41}$

6 pages, 8 figures

References in corpus (4)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• One- and Two-Triplon Spectra of a Cuprate Ladder
• Influence of doping on the Hall coefficient in Sr_{14-x}Ca_xCu_24O_41
• Underlying Fermi surface of Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$ in two-dimensional momentum space observed by angle-resolved photoemission spectroscopy

Cited by in corpus (6)

• Projector augmented wave calculation of x-ray absorption spectra at the L2,3 edges
• Crossover of the high-energy spin fluctuations from collective triplons to localized magnetic excitations in doped Sr14-xCaxCu24O41 cuprate ladders
• Symmetry-protected electronic metastability in an optically driven cuprate ladder
• Suppression of the Charge-Density-Wave State in Sr${}_{10}$Ca${}_4$Cu${}_{24}$O${}_{41}$ by External Pressure
• Evidence for an orbital dependent Mott transition in the ladders of (La,Ca)${}_x$Sr${}_{14-x}$Cu${}_{24}$O${}_{41}$ derived by electron energy-loss spectroscopy
• Polarization-dependent infrared reflectivity study of Sr${}_{2.5}$Ca${}_{11.5}$Cu${}_{24}$O${}_{41}$ under pressure: Charge dynamics, charge distribution, and anisotropy