Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics
It is shown that long-lived photoinduced dichroism in garnets is caused by photoproduced
 charges with anisotropic structure, keeping long memory of the pumping light polarization, while
 photoinduced absorption is due to all photoproduced charges irrespective of their intrinsic stru...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2005 |
| Автори: | , , , , , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2005
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/121729 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics / V.V. Eremenko, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, A.M. Ratner, V.V. Shapiro, M.B. Kosmyna, B.P. Nazarenko, V.M. Puzikov // Физика низких температур. — 2005. — Т. 31, № 11. — С. 1293-1301. — Бібліогр.: 17 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862597583580430336 |
|---|---|
| author | Eremenko, V.V. Gnatchenko, S.L. Kachur, I.S. Piryatinskaya, V.G. Ratner, A.M. Shapiro, V.V. Kosmyna, M.B. Nazarenko, B.P. Puzikov, V.M. |
| author_facet | Eremenko, V.V. Gnatchenko, S.L. Kachur, I.S. Piryatinskaya, V.G. Ratner, A.M. Shapiro, V.V. Kosmyna, M.B. Nazarenko, B.P. Puzikov, V.M. |
| citation_txt | Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics / V.V. Eremenko, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, A.M. Ratner, V.V. Shapiro, M.B. Kosmyna, B.P. Nazarenko, V.M. Puzikov // Физика низких температур. — 2005. — Т. 31, № 11. — С. 1293-1301. — Бібліогр.: 17 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | It is shown that long-lived photoinduced dichroism in garnets is caused by photoproduced
charges with anisotropic structure, keeping long memory of the pumping light polarization, while
photoinduced absorption is due to all photoproduced charges irrespective of their intrinsic structure.
The charges with anisotropic structure are identified as two-center oxygen holes. The formation
of an oxygen hole is preceded by the excitation of a charge-transfer state with electron partially
transferred to a cation C (V⁵⁺ for NaCa₂Mn₂V₃O₁₂ garnet) from an adjacent oxygen anion.
To turn this excited state into a free hole state requires some time τhole during which the hole axis
can be reoriented resulting in a diminution of dichroism. The time τhole shortens with increasing
ionization potential of the cation C (very high for V⁵⁺). Such a mechanism explains qualitatively a
set of unusual experimental facts, in particular, a very strong dichroism observed just in the
NaCa₂Mn₂V₃O₁₂ garnet, where photoinduced changes of all optical properties disappear after
switching off of the irradiation significantly faster than those in other garnets examined.
|
| first_indexed | 2025-11-27T16:51:40Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-121729 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-27T16:51:40Z |
| publishDate | 2005 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Eremenko, V.V. Gnatchenko, S.L. Kachur, I.S. Piryatinskaya, V.G. Ratner, A.M. Shapiro, V.V. Kosmyna, M.B. Nazarenko, B.P. Puzikov, V.M. 2017-06-15T15:40:33Z 2017-06-15T15:40:33Z 2005 Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics / V.V. Eremenko, S.L. Gnatchenko, I.S. Kachur, V.G. Piryatinskaya, A.M. Ratner, V.V. Shapiro, M.B. Kosmyna, B.P. Nazarenko, V.M. Puzikov // Физика низких температур. — 2005. — Т. 31, № 11. — С. 1293-1301. — Бібліогр.: 17 назв. — англ. 0132-6414 PASC: 78.40.-q https://nasplib.isofts.kiev.ua/handle/123456789/121729 It is shown that long-lived photoinduced dichroism in garnets is caused by photoproduced
 charges with anisotropic structure, keeping long memory of the pumping light polarization, while
 photoinduced absorption is due to all photoproduced charges irrespective of their intrinsic structure.
 The charges with anisotropic structure are identified as two-center oxygen holes. The formation
 of an oxygen hole is preceded by the excitation of a charge-transfer state with electron partially
 transferred to a cation C (V⁵⁺ for NaCa₂Mn₂V₃O₁₂ garnet) from an adjacent oxygen anion.
 To turn this excited state into a free hole state requires some time τhole during which the hole axis
 can be reoriented resulting in a diminution of dichroism. The time τhole shortens with increasing
 ionization potential of the cation C (very high for V⁵⁺). Such a mechanism explains qualitatively a
 set of unusual experimental facts, in particular, a very strong dichroism observed just in the
 NaCa₂Mn₂V₃O₁₂ garnet, where photoinduced changes of all optical properties disappear after
 switching off of the irradiation significantly faster than those in other garnets examined. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Квантовые эффекты в полупpоводниках и диэлектриках Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics Article published earlier |
| spellingShingle | Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics Eremenko, V.V. Gnatchenko, S.L. Kachur, I.S. Piryatinskaya, V.G. Ratner, A.M. Shapiro, V.V. Kosmyna, M.B. Nazarenko, B.P. Puzikov, V.M. Квантовые эффекты в полупpоводниках и диэлектриках |
| title | Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics |
| title_full | Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics |
| title_fullStr | Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics |
| title_full_unstemmed | Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics |
| title_short | Photoinduced absorption and anomalous dichroism in NaCa₂Mn₂V₃O₁₂ garnet as an evidence for the formation of oxygen holes dynamics |
| title_sort | photoinduced absorption and anomalous dichroism in naca₂mn₂v₃o₁₂ garnet as an evidence for the formation of oxygen holes dynamics |
| topic | Квантовые эффекты в полупpоводниках и диэлектриках |
| topic_facet | Квантовые эффекты в полупpоводниках и диэлектриках |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/121729 |
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