Single crystal growth of tunable quantum spin systems (B04)

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The aim of this project is the single crystal growth and characterization of Cu-based quantum spin systems, which serve as model systems to study quantum many-body effects. One important aspect is the role of magnetic frustration, which is closely connected to the geometric arrangement of the Cu2+ spins in the different structure types. Furthermore, we are aiming to prepare materials which are tunable between different magnetic ground states by either substitution or magnetic field. We propose to work on three different material classes: (A) Cs2CuCl4-xBrx (B) Ba1-xSrxCuSi2O6 and (C) ZnxCu4¿x(OH)6Cl2.