Comment on "spin correlations in the paramagnetic phase and ring exchange in La2CuO4".
نویسندگان
چکیده
منابع مشابه
Spin correlations in the paramagnetic phase and ring exchange in La2CuO4.
Spin correlations in the paramagnetic phase of La(2)CuO(4) have been studied using polarized neutron scattering, with two important results. First, the temperature dependence of the characteristic energy scale of the fluctuations and the amplitude of the neutron structure factor are shown to be in quantitative agreement with the predictions of the quantum nonlinear sigma model. Second, a compar...
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The magnetic excitations of the square-lattice spin-1/2 antiferromagnet and high- T(c) parent compound La2CuO4 are determined using high-resolution inelastic neutron scattering. Sharp spin waves with absolute intensities in agreement with theory including quantum corrections are found throughout the Brillouin zone. The observed dispersion relation shows evidence for substantial interactions bey...
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عنوان ژورنال:
- Physical review letters
دوره 97 4 شماره
صفحات -
تاریخ انتشار 2006