Summary
In long molecules with helical structure it is shown that the electron’s response functionF(q,T) is singular for various wave vectors. Then deformed phases associated with different periodicites can occur as a function of external pressure. The calculation was done as a function of temperature and for small number of atoms per turn.
Riassunto
Si mostra in lunghe molecole con struttura elicoidale che la funzione di risposta dell’elettroneF(q, T) è singolare per vari vettori d’onda. Allora possono verificarsi fasi deformate associate a diverse periodicità in funzione della pressione esterna. Si effettua il calcolo in funzione della temperatura e per un numero ridotto di atomi per spira.
Резюме
В длинных молекулах с геликоидальной структурой показывается, что функция электронного откликаF(q, T) является сингулярной для различных волновых векторов. В связи с этим могут возникать деформированные фазы, связанные с различными периодичностями, в зависимости от внешнего давления. Проводятся вычисления в зависимости от температуры и для малого числа атомов на виток.
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Gottlieb, D., Melo, F. Peierls transition in helical structures. Il Nuovo Cimento D 10, 1427–1437 (1988). https://doi.org/10.1007/BF02454209
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DOI: https://doi.org/10.1007/BF02454209