Temperature Dependence of the Spin-Peierls Energy Gap and Anomalous Line Shapes in CuGeO${}_3$

Michael C. Martin, G. Shirane, Y. Fujii +5

Neutron scattering measurements on a large single crystal of CuGeO${}_3$ have been used to determine the temperature-dependence of the spin-Peierls energy gap. While the power law be…