Peculiarities of neutron scattering by order-disorder antiferroelectrics
Using the dynamical proton (pseudospin)-heavy ion (lattice) model and the Green function formalism, the effective total differential cross sections for both coherent and incoherent neutron scattering are derived. The characteristic interference effects due to both tunnelling of light ions (proton...
Збережено в:
| Дата: | 2002 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут фізики конденсованих систем НАН України
2002
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120685 |
| Теги: |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Peculiarities of neutron scattering by order-disorder antiferroelectrics / S. Stamenkovic // Condensed Matter Physics. — 2002. — Т. 5, № 4(32). — С. 641-658. — Бібліогр.: 37 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Using the dynamical proton (pseudospin)-heavy ion (lattice) model and the
Green function formalism, the effective total differential cross sections for
both coherent and incoherent neutron scattering are derived. The characteristic
interference effects due to both tunnelling of light ions (protons)
and mixed proton-heavy ion scattering processes are expressed by corresponding
pseudospin and pseudospin-phonon form-factors. The scattering
intensity pattern in antiferroelectric phase is accomplished by polar modulation
effects and additional interference in the cross sections. The theoretical
predictions are related to experimental studies of ADP, Rochelle
salt and NaNO₂. Their possible application to test the coexistence of (anti)ferroelectric
and superconducting phases in high-Tc copper-oxide superconductors
is briefly discussed too. |
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