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Showing 1 to 3 of 3 for “"Quantenspinsystem"”.
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Magnon heat transport and magnon-hole scattering in one and two dimensions spin systems
The magnon thermal conductivity k_mag of the low dimensional quantum spin systems La2CuO4 and (Sr,Ca)14Cu24O41 with a focus on magnon hole scattering and its relevance for the magnetic heat transport has been investigated experimentally. In the two dimensional Heisenberg antiferromagnet La2CuO4 …
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Spin-Phonon-Kopplung und Spin-Anregungen in quasi-eindimensionalen Spinsystemen
Following the investigations of two-dimensional superconducting cuprates and the search for related transition metal oxides a fascinating field of copper oxide compounds, vanadates, manganates and nikelates opened up. These compounds show effects of strong electronic correlations and in particular …
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Inelastic light scattering in low-dimensional spin systems
In this work diverse results obtained from a number of low-dimensional quantum spin systems using Raman spectroscopy have been presented. The main motivation of this thesis is to hunt for new types of elementary excitations which may be present in low-dimensional spin systems with exotic spin …