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

preprint2013arXivOpen access

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 Å.

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

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Direct evidence of nuclear spin waves in Nd2_22​CuO4_44​ by high-resolution neutron-spin-echo spectroscopy

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