1983
DOI: 10.1103/physrevb.28.4893
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X-ray photoemission study of a new allotrope of solid selenium (rhombohedral Se consisting ofSe6ring molecules)

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Cited by 21 publications
(23 citation statements)
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“…The Ge 4p and As 4p electronic states of the atoms participating in Ge-Ge, Ge-As and As-As bonding should contribute to the peak around~3 eV [24,29], but it could be partially overlapped also with stronger Se 4p band shifted towards lower binding energy because of decreased number of Se-Se bonds as per specific composition. The next broad features in the 6-16 eV range correspond to the signal from 4s electrons of As, Ge and Se [23,24,28,29]. Compositional dependences of valence band correlate well with those observed separately for As-Se [23] and Ge-Se [24] binary glass systems.…”
Section: Resultssupporting
confidence: 69%
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“…The Ge 4p and As 4p electronic states of the atoms participating in Ge-Ge, Ge-As and As-As bonding should contribute to the peak around~3 eV [24,29], but it could be partially overlapped also with stronger Se 4p band shifted towards lower binding energy because of decreased number of Se-Se bonds as per specific composition. The next broad features in the 6-16 eV range correspond to the signal from 4s electrons of As, Ge and Se [23,24,28,29]. Compositional dependences of valence band correlate well with those observed separately for As-Se [23] and Ge-Se [24] binary glass systems.…”
Section: Resultssupporting
confidence: 69%
“…1 shows valence band spectra for some selected glass compositions. The peak at the top of the valence band around~2 eV corresponds to the XPS signal from lone pair electrons of Se atoms [28]. Bonding states related to Se 4p electrons within Se-Ge, Se-As and Se-Se covalent bonds give rise to the wide band centered at 5 eV [23,24,28].…”
Section: Resultsmentioning
confidence: 98%
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“…Valence-band spectra for amorphous Se have been obtained by means of UPS and XPS [4][5][6]16], and then, the valence-band features have been revealed to be close to those for the trigonal form. In amorphous Se, an order between chains shown in figure 1(a) is expected to be lost.…”
Section: Introductionmentioning
confidence: 94%
“…The density of states (DOS) of trigonal Se in the valence-band region has been investigated by means of ultraviolet and x-ray photoemission spectroscopies (UPS and XPS) [4][5][6]. The UPS and XPS spectra exhibited a prominent peak at −2 eV, two peaks between −3.5 and −7 eV, as well as two broad peaks between −11 and −17 eV with respect to the valence-band maximum (VBM).…”
Section: Introductionmentioning
confidence: 99%