Ultrasonic investigations of the Jahn-Teller effect in a ZnSe: Fe2+ crystal
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| Заглавие |
Ultrasonic investigations of the Jahn-Teller effect in a ZnSe: Fe2+ crystal
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| Автор |
Gudkov, V. V.
Lonchakov, A. T. Zhevstovskikh, I. V. Sokolov, V. I. Surikov, V. T. |
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| Описание |
The temperature dependence of the absorption and velocity of transverse ultrasonic waves propagating in the [110] direction in a ZnSe: Fe2+ crystal with the iron impurity of n=2.2× 1019 cm-3 is investigated in the temperature interval 1.4-100 K at a frequency of 53 MHz. For the slow transverse mode an absorption peak at 7.3 K and a decrease of the phase velocity below 40 K are found, while no such features are observed for the fast mode. The anomalies are interpreted as manifestations of the Jahn-Teller effect. The softening of the elastic modulus (C11 - C12) 2 indicates that the local distortions in ZnSe: Fe2+ are tetragonal. Under the assumption that the absorption maximum is of a relaxational nature, the temperature dependence of the relaxation time is recovered from the data, and the values of the potential barrier height and vibronic frequency are obtained. © 2009 American Institute of Physics.
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| Дата |
2019-07-17T10:00:17Z
2019-07-17T10:00:17Z 2009 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
1063-777X
1090-6517 https://www.scopus.com/record/display.uri?origin=resultslist&eid=2-s2.0-60349105683 https://elar.rsvpu.ru/handle/123456789/28134 10.1063/1.3064913 60349105683 2-s2.0-60349105683 Ural State Technical University, Ul. Mira 19, Ekaterinburg 620002, Russian Federation Russian State Professional-Pedagogical University, Ul. Mashinostroitele 11, Ekaterinburg 620012, Russian Federation Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. Sof'i Kovalevsko 18, Ekaterinburg 620041, Russian Federation Institute of Solid State Chemistry, Ural Division, Russian Academy of Sciences, ul. Pervomaskaya 91, Ekaterinburg 620041, Russian Federation Scopus Gudkov, V.V., Ural State Technical University, Ul. Mira 19, Ekaterinburg 620002, Russian Federation, Russian State Professional-Pedagogical University, Ul. Mashinostroitele 11, Ekaterinburg 620012, Russian Federation, Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. Sof'i Kovalevsko 18, Ekaterinburg 620041, Russian Federation Lonchakov, A.T., Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. Sof'i Kovalevsko 18, Ekaterinburg 620041, Russian Federation Zhevstovskikh, I.V., Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. Sof'i Kovalevsko 18, Ekaterinburg 620041, Russian Federation Sokolov, V.I., Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. Sof'i Kovalevsko 18, Ekaterinburg 620041, Russian Federation Surikov, V.T., Institute of Solid State Chemistry, Ural Division, Russian Academy of Sciences, ul. Pervomaskaya 91, Ekaterinburg 620041, Russian Federation WOS:000263292500014 000263292500014 |
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| Язык |
en
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| Права |
Restricted accedd (info:eu-repo/semantics/restrictedAccess)
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| Формат |
text/html
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| Охват |
RSVPU
SCOPUS |
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| Издатель |
AIP Publishing
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| Источник |
Low Temperature Physics
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