Dynamic properties of inhomogeneous states in cuprates (Review Article)

• Опубліковано в: : Физика низких температур
• Дата: 2006
• Автори: Lorenzana, J., Seibold, G.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2006
• Теми: General Aspects
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/120186
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Dynamic properties of inhomogeneous states in cuprates
 (Review Article) / J. Lorenzana, G. Seibold // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 430-454. — Бібліогр.: 143 назв. — англ.

We review the static and dynamical properties of stripe textures with regard to their relevance
 in high-Tc superconductors. Our investigations are based on the time-dependent Gutzwiller approximation
 which allows for the computation of random-phase approximation-like (RPA) fluctuations
 on top of the Gutzwiller approximation (GA). No restrictions are imposed on the charge and
 spin configurations which makes the method suitable for the calculation of linear excitations
 around symmetry-broken solutions. Within this approach we calculate the optical conductivity of
 stripes and compare our results with reflectivity experiments on cuprates. Furtheron we use the
 spin-rotational invariant extension of the GA + RPA method in order to investigate the characteristics
 of magnetic excitations in the stripe phase of cuprates. Our results are in very good agreement
 with neutron scattering and optical experiments on lanthanum cuprate superconductors.