1307.2998 (Tapan Chatterji et al.)

Direct evidence of nuclear spin waves in Nd$_2$CuO$_4$ by
high-resolution neutron-spin-echo spectroscopy    [PDF]

Tapan Chatterji, Olaf Holderer, Harald Schneider

We investigated the dispersion of nuclear spin waves in Nd$_2$CuO$_4$ by using neutron spin-echo spectroscopy at millikelvin temperatures. Our results show unambiguously the existence of dispersion of nuclear spin waves in Nd$_2$CuO$_4$ at T = 30 mK. A fit of the dispersion data with the spin wave dispersion formula gave the Suhl-Nakamura interaction range to be of the order of 10 {\AA}.

View original: http://arxiv.org/abs/1307.2998