Anisotropic spin excitations in spin-Peierls CuGeO3

作者：Ikeuchi Kazuhiko^*; Kajimoto Ryoichi; Mizuno Fumio; Fujita Masaki; Inamura Yasuhiro; Nakamura Mitsutaka; Nakajima Kenji; Aizawa Kazuya; Arai Masatoshi

来源：Journal of the Korean Physical Society, 2013, 63(3): 333-336.

DOI：10.3938/jkps.63.333

• CuGeO3
• One-dimensional quantum spin system
• Inter-chain interaction
• Inelastic neutron scattering experiment

We report on the investigation of spin excitations in CuGeO3 at a low temperature by using inelastic neutron scattering on a pulsed source with a time-of-flight analysis. By observing the dispersion relation of spin excitations not only along the chain direction but also along the inter chain direction, we studied spin correlations in the S = 1/2 Heisenberg chains, as well as between the chains, in detail. The results show a clear anisotropy of the magnetic excitations at a temperature below the spin-Peierls transition temperature.

• 出版日期2013-8