Highly frustrated quantum magnetism in the mineral azurite: multi-step approach from first-principles computations to experimental data
ORAL
Abstract
The natural mineral azurite Cu$_3$(CO$_3$)$_2$(OH)$_2$ is a frustrated magnet displaying unusual and controversially discussed magnetic behavior. We perform a theoretical study based on density functional theory as well as state-of-the-art numerical many-body calculations [1]. We propose an effective generalized spin-1/2 diamond chain model which provides a consistent description of experiments: low-temperature magnetization, inelastic neutron scattering, nuclear magnetic resonance measurements, magnetic susceptibility as well as new specific heat measurements. With this study we demonstrate that the balanced combination of first principles with powerful many-body methods successfully describes the behavior of this frustrated material. \newline [1] H. O. Jeschke {\it et al.}, Phys. Rev. Lett. {\bf 106}, 217201 (2011)
