Hofmann, T.; Kumar, P.; Enderle, M.; Wallacher, D.: Growth of Highly Oriented Deuterium Crystals in Silicon Nanochannels. Physical Review Letters 110 (2013), p. 065505/1-5

The structure of solid deuterium confined in 9 nm wide tubular silicon nanochannels has been studied by means of elastic neutron scattering techniques. As a result we report the formation of fcc D2 as the stable solid phase in confinement in contrast to the hcp bulk structure. Further, a preferred alignment of D2 nanocrystals with respect to the surrounding crystalline silicon matrix is discussed in terms of heteroepitaxial growth of solid D2 on crystalline pore walls.