Coupled frustrated quantum spin-1-2 chains with orbital order in volborthite Cu3V2O7OH2H2O2 - Condensed Matter > Strongly Correlated ElectronsReport as inadecuate




Coupled frustrated quantum spin-1-2 chains with orbital order in volborthite Cu3V2O7OH2H2O2 - Condensed Matter > Strongly Correlated Electrons - Download this document for free, or read online. Document in PDF available to download.

Abstract: We present a microscopic magnetic model for the spin-liquid candidatevolborthite Cu3V2O7OH2H2O2. The essentials of this DFT-based model are ithe orbital ordering of Cu1 3d 3z2-r2 and Cu2 3d 3x2-y2, ii threerelevant couplings J ic, J 1 and J 2, iii the ferromagnetic nature of J 1 andiv frustration governed by the next-nearest-neighbor exchange interactionJ 2. Our model implies magnetism of frustrated coupled chains in contrast tothe previously proposed anisotropic kagome model. Exact diagonalization studiesreveal agreement with experiments.



Author: O. Janson, J. Richter, P. Sindzingre, H. Rosner

Source: https://arxiv.org/



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