Resonant inelastic x-ray scattering and UV-VUV luminescence at the Be 1s edge in BeO / Kikas A.,Kaambre T.,Kooser K.,Kuusik I.,Kisand V.,Nommiste E.,Kirm M.,Feldbach E.,Ivanov V.,Pustovarov V.,Martinson I. // JOURNAL OF PHYSICS-CONDENSED MATTER. - 2010. - V. 22, l. 37.

ISSN/EISSN:

0953-8984 / нет данных

Type:

Article

Abstract:

We carried out a combined study of UV-VUV luminescence and resonant x-ray emission from BeO single crystals with incident photon energies in the vicinity of the Be 1s absorption edge. The x-ray emission spectra show that at the Be 1s photoabsorption edge the lattice relaxation processes in the excitation site take place already on the timescale of the radiative decay of the core excitation. Comparison of the x-ray emission and the luminescence spectra indicates that the maximum energy loss of the process of lattice relaxation during the decay of inner-shell holes is similar to the loss that occurs in the self-trapping process of valence excitons. The possible decay channels of core excitations have been discussed and the mechanism for the creation of 5.2 eV luminescence at the photoabsorption resonances has been suggested.

Author keywords:

INNER-SHELL EXCITATION; CRYSTALS; EXCITONS; DIAMOND

DOI:

10.1088/0953-8984/22/37/375505

Web of Science ID:

ISI:000281422700014

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	SEP 22
Publisher	IOP PUBLISHING LTD
Address	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Language	English
Article-Number	375505
Keywords-Plus	INNER-SHELL EXCITATION; CRYSTALS; EXCITONS; DIAMOND
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	Arvo.Kikas@ut.ee
ResearcherID-Numbers	Kisand, Vambola/A-6822-2008 Kikas, Arvo/H-3136-2015 Kaambre, Tanel/K-3980-2014 Kirm, Marco/M-1533-2016
ORCID-Numbers	Kisand, Vambola/0000-0001-9765-055X Kaambre, Tanel/0000-0003-1453-4663 Kirm, Marco/0000-0002-1833-6894
Funding-Acknowledgement	Estonian Science Foundation {[}7615, 8216, 8306]; NordForsk; European Community through the Integrated Infrastructure Initiative `Integrating Activity on Synchrotron and Free Electron Laser Science'
Funding-Text	This work was supported by the Estonian Science Foundation (grants No 7615, 8216 and 8306), NordForsk and the European Community Research Infrastructure Action under the FP6 `Structuring the European Research Area' Programme (through the Integrated Infrastructure Initiative `Integrating Activity on Synchrotron and Free Electron Laser Science'). The authors also wish to thank MAX-lab and HASYLAB staff for their support during the measurements.
Number-of-Cited-References	26
Usage-Count-Since-2013	3
Journal-ISO	J. Phys.-Condes. Matter
Doc-Delivery-Number	645AG