Comments on core-hole lifetime effects in deep-level spectroscopies
(1978) In Physical Review B 17(2). p.929-939- Abstract
- he effects of a finite core-hole lifetime on deep-level spectra in solids have recently attracted much interest. We here present a solvable model which enables a detailed analysis of lifetime effects. For x-ray photoemission and x-ray absorption, our analysis gives support for the usual convolution approach where the infinite lifetime spectrum is convoluted with a Lorentzian lifetime broadening. In particular, we demonstrate the inadequacy of a recent intuitive approach which predicts a suppression of the phonon broadening for short core-hole lifetimes. This is done by testing the different theories on our model. We also show that a straightforward diagrammatic analysis leads to the same conclusion. Finally, we discuss the phonon response... (More)
- he effects of a finite core-hole lifetime on deep-level spectra in solids have recently attracted much interest. We here present a solvable model which enables a detailed analysis of lifetime effects. For x-ray photoemission and x-ray absorption, our analysis gives support for the usual convolution approach where the infinite lifetime spectrum is convoluted with a Lorentzian lifetime broadening. In particular, we demonstrate the inadequacy of a recent intuitive approach which predicts a suppression of the phonon broadening for short core-hole lifetimes. This is done by testing the different theories on our model. We also show that a straightforward diagrammatic analysis leads to the same conclusion. Finally, we discuss the phonon response to the total process of core-hole creation and subsequent annihilation in an x-ray or Auger emission event. It is explained in some detail that the lifetime independence of the shake-up connected with the first step in this process is in no contradiction with the fact that the phonon system is uneffected by the total deep-level process in the limit of short core-hole lifetimes. We also analyze the process of 1s hole creation and subsequent Auger K-LL emission and give explicit expressions for this process. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8772523
- author
- Almbladh, Carl-Olof LU and Minnhagen, Petter
- organization
- publishing date
- 1978
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B
- volume
- 17
- issue
- 2
- pages
- 929 - 939
- publisher
- American Physical Society
- external identifiers
-
- scopus:0001539644
- ISSN
- 1550-235X
- language
- English
- LU publication?
- yes
- id
- 0fe0b468-ebe5-44d3-8533-ee49d6aefef7 (old id 8772523)
- date added to LUP
- 2016-04-04 14:30:45
- date last changed
- 2021-10-10 03:21:35
@article{0fe0b468-ebe5-44d3-8533-ee49d6aefef7,
abstract = {{he effects of a finite core-hole lifetime on deep-level spectra in solids have recently attracted much interest. We here present a solvable model which enables a detailed analysis of lifetime effects. For x-ray photoemission and x-ray absorption, our analysis gives support for the usual convolution approach where the infinite lifetime spectrum is convoluted with a Lorentzian lifetime broadening. In particular, we demonstrate the inadequacy of a recent intuitive approach which predicts a suppression of the phonon broadening for short core-hole lifetimes. This is done by testing the different theories on our model. We also show that a straightforward diagrammatic analysis leads to the same conclusion. Finally, we discuss the phonon response to the total process of core-hole creation and subsequent annihilation in an x-ray or Auger emission event. It is explained in some detail that the lifetime independence of the shake-up connected with the first step in this process is in no contradiction with the fact that the phonon system is uneffected by the total deep-level process in the limit of short core-hole lifetimes. We also analyze the process of 1s hole creation and subsequent Auger K-LL emission and give explicit expressions for this process.}},
author = {{Almbladh, Carl-Olof and Minnhagen, Petter}},
issn = {{1550-235X}},
language = {{eng}},
number = {{2}},
pages = {{929--939}},
publisher = {{American Physical Society}},
series = {{Physical Review B}},
title = {{Comments on core-hole lifetime effects in deep-level spectroscopies}},
volume = {{17}},
year = {{1978}},
}