# Quantum critical dynamics of an S = 1 2 antiferromagnetic Heisenberg chain studied by C 13 NMR spectroscopy

@inproceedings{Kuehne2009QuantumCD, title={Quantum critical dynamics of an S = 1 2 antiferromagnetic Heisenberg chain studied by C 13 NMR spectroscopy}, author={Hannes Kuehne and H. J. Klauss and Simon Grossjohann and Wolfram Brenig and Fred Jochen Litterst and Arneil P. Reyes and Philip L. Kuhns and Mark M. Turnbull and Christopher P. Landee}, year={2009} }

We present a $^{13}\text{C}$ NMR study of the magnetic field driven transition to complete polarization of the $S=\frac{1}{2}$ antiferromagnetic Heisenberg chain system copper pyrazine dinitrate $\text{Cu}({\text{C}}_{4}{\text{H}}_{4}{\text{N}}_{2}){({\text{NO}}_{3})}_{2}$ (CuPzN). The static local magnetization as well as the low-frequency spin dynamics, probed via the nuclear spin-lattice relaxation rate ${T}_{1}^{\ensuremath{-}1}$, were explored from the low to the high field limit and at… CONTINUE READING

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