Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Acta Crystallogr A ; 69(Pt 6): 611-9, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24132222

RESUMO

Spin line groups describe the symmetries of spin arrangements in quasi-one-dimensional systems. These groups are derived for the first family of line groups. Among them, magnetic groups are singled out as a special case. Spin arrangements generated by the derived groups are first discussed for single-orbit systems and then the conclusions are extended to multi-orbit cases. The results are illustrated by the examples of a CuO2 zigzag chain, a (13)C nanotube and the hexaferrite Ba2Mg2Fe12O22. Applications to neutron diffraction and classical ground-state determination are indicated.

2.
J Phys Condens Matter ; 18(6): 1939-53, 2006 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-21697567

RESUMO

The full geometrical symmetry groups of zinc oxide nanowires, nanotubes, nanosprings and nanorings are found and some physical properties which can be deduced from the symmetry are discussed: conserved quantum numbers and band degeneracies; dynamical representations, Raman and infrared active modes; piezoelectric tensor.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA