Low frequency spin dynamics in the quantum magnet copper pyrazine dinitrate

Details Low frequency spin dynamics in the quantum magnet copper pyrazine dinitrate Low frequency spin dynamics in the quantum magnet copper pyrazine dinitrate

2010-03-23

arxiv.org/abs/1003.4535v1

Physica Status Solidi B 247, 671 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 6 figures, published in Physica Status Solidi B

Scientific paper

10.1002/pssb.200983077

The S=1/2 antiferromagnetic Heisenberg chain exhibits a magnetic field driven quantum critical point. We study the low frequency spin dynamics in copper pyrazine dinitrate (CuPzN), a realization of this model system of quantum magnetism, by means of $^{13}$C-NMR spectroscopy. Measurements of the nuclear spin-lattice relaxation rate $T_1^{-1}$ in the vicinity of the saturation field are compared with quantum Monte Carlo calculations of the dynamic structure factor. Both show a strong divergence of low energy excitations at temperatures in the quantum regime. The analysis of the anisotropic $T_1^{-1}$-rates and frequency shifts allows one to disentangle the contributions from transverse and longitudinal spin fluctuations for a selective study and to determine the transfer of delocalized spin moments from copper to the neighboring nitrogen atoms.

Affiliated with

Also associated with

No associations

Rating

Low frequency spin dynamics in the quantum magnet copper pyrazine dinitrate does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Low frequency spin dynamics in the quantum magnet copper pyrazine dinitrate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low frequency spin dynamics in the quantum magnet copper pyrazine dinitrate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-56441