Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-12-06
Phys. Rev. Lett. 106, 217201 (2011)
Physics
Condensed Matter
Strongly Correlated Electrons
final version to appear in Phys. Rev. Lett.; 10 pages, 9 figures, 4 tables (including supplementary material)
Scientific paper
10.1103/PhysRevLett.106.217201
The natural mineral azurite Cu$_3$(CO$_3$)$_2$(OH)$_2$ is a frustrated magnet displaying unusual and controversially discussed magnetic behavior. Motivated by the lack of a unified description for this system, we perform a theoretical study based on density functional theory as well as state-of-the-art numerical many-body calculations. 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.
Brühl Andreas
Das Hena
Honecker Andreas
Hu Shijie
Janson Oleg
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