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Title: Occupied and unoccupied electronic structures of an L-cysteine film studied by core-absorption and resonant photoelectron spectroscopies

Abstract

Unoccupied and occupied electronic structures of an L-cysteine film have been studied by absorption and resonant photoelectron spectroscopies. Core absorptions at S-L, C-K, N-K, and O-K levels indicate that the lower unoccupied states are predominantly composed of oxygen-2p, carbon-2p, and sulfur-4s+3d orbitals, while higher unoccupied states may be attributed dominantly to nitrogen-np (n ≥ 3), oxygen-np (n ≥ 3), and sulfur-ns+md (n ≥ 4,  m ≥ 3) orbitals. Resonant photoelectron spectra at S-L{sub 23} and O-K levels indicate that the highest occupied state is originated from sulfur-3sp orbitals, while oxygen-2sp orbitals contribute to the deeper valence states. The delocalization lifetimes of the oxygen-1s and sulfur-2p excited states are estimated from a core-hole clock method to be about 9 ± 1 and 125 ± 25 fs, respectively.

Authors:
; ; ; ; ;  [1]
  1. Synchrotron Light Application Center, Saga University, Honjo 1, Saga 840-8502 (Japan)
Publication Date:
OSTI Identifier:
22611679
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 4; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; CARBON; CYSTEINE; ELECTRONIC STRUCTURE; ENERGY LEVELS; EXCITED STATES; FILMS; HOLES; LIFETIME; NITROGEN; OXYGEN; PHOTOELECTRON SPECTROSCOPY; SULFUR; VALENCE

Citation Formats

Kamada, M., E-mail: kamada@cc.saga-u.ac.jp, Hideshima, T., Azuma, J., Yamamoto, I., Imamura, M., and Takahashi, K.. Occupied and unoccupied electronic structures of an L-cysteine film studied by core-absorption and resonant photoelectron spectroscopies. United States: N. p., 2016. Web. doi:10.1063/1.4947072.
Kamada, M., E-mail: kamada@cc.saga-u.ac.jp, Hideshima, T., Azuma, J., Yamamoto, I., Imamura, M., & Takahashi, K.. Occupied and unoccupied electronic structures of an L-cysteine film studied by core-absorption and resonant photoelectron spectroscopies. United States. doi:10.1063/1.4947072.
Kamada, M., E-mail: kamada@cc.saga-u.ac.jp, Hideshima, T., Azuma, J., Yamamoto, I., Imamura, M., and Takahashi, K.. Fri . "Occupied and unoccupied electronic structures of an L-cysteine film studied by core-absorption and resonant photoelectron spectroscopies". United States. doi:10.1063/1.4947072.
@article{osti_22611679,
title = {Occupied and unoccupied electronic structures of an L-cysteine film studied by core-absorption and resonant photoelectron spectroscopies},
author = {Kamada, M., E-mail: kamada@cc.saga-u.ac.jp and Hideshima, T. and Azuma, J. and Yamamoto, I. and Imamura, M. and Takahashi, K.},
abstractNote = {Unoccupied and occupied electronic structures of an L-cysteine film have been studied by absorption and resonant photoelectron spectroscopies. Core absorptions at S-L, C-K, N-K, and O-K levels indicate that the lower unoccupied states are predominantly composed of oxygen-2p, carbon-2p, and sulfur-4s+3d orbitals, while higher unoccupied states may be attributed dominantly to nitrogen-np (n ≥ 3), oxygen-np (n ≥ 3), and sulfur-ns+md (n ≥ 4,  m ≥ 3) orbitals. Resonant photoelectron spectra at S-L{sub 23} and O-K levels indicate that the highest occupied state is originated from sulfur-3sp orbitals, while oxygen-2sp orbitals contribute to the deeper valence states. The delocalization lifetimes of the oxygen-1s and sulfur-2p excited states are estimated from a core-hole clock method to be about 9 ± 1 and 125 ± 25 fs, respectively.},
doi = {10.1063/1.4947072},
journal = {AIP Advances},
number = 4,
volume = 6,
place = {United States},
year = {Fri Apr 15 00:00:00 EDT 2016},
month = {Fri Apr 15 00:00:00 EDT 2016}
}