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Specific features of the optical absorption edge anisotropy in In4(P2S6)3 layered crystals

Identifieur interne : 00EA26 ( Main/Repository ); précédent : 00EA25; suivant : 00EA27

Specific features of the optical absorption edge anisotropy in In4(P2S6)3 layered crystals

Auteurs : RBID : Pascal:03-0118423

Descripteurs français

Pascal (Inist)
- Spectre absorption, Limite absorption, Interaction électron phonon, Dépendance température, Structure bande, Règle Urbach, Cristal lamellaire, Indium Thiophosphate, Composé ternaire, Etude expérimentale, Modèle Einstein, In4(P2S6)3, In P S, 7820C.

English descriptors

KwdEn :
- Absorption edge, Absorption spectra, Band structure, Electron-phonon interactions, Experimental study, Indium Thiophosphates, Layered crystals, Temperature dependence, Ternary compounds, Urbach rule.

Abstract

The optical absorption edge of In₄(P₂S₆)₃ layered crystals is studied in the temperature range 77-355 K. In the spectral range of direct optical transitions, the absorption edge is of Urbach shape. Electron-phonon interaction result in the smearing of energy bands and, consequently, in appearing of Urbach absorption tails. The temperature variation of the optical pseudogap E*_g and the absorption edge energy width w are well described in the Einstein model. Strong anisotropy of the absorption edge spectral position and shape, as well as of electron-phonon interaction, is revealed.

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Pascal:03-0118423

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(P<sub>2</sub>
S<sub>6</sub>
)<sub>3</sub>
 layered crystals</title>
<author><name sortKey="Kranjcec, M" uniqKey="Kranjcec M">M. Kranjcec</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Geotechnical Department Varaždin, University of Zagreb, 7 Hallerova Apleja</s1>
<s2>42000 Varaždin</s2>
<s3>HRV</s3>
<sZ>1 aut.</sZ>
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<country>Croatie</country>
<wicri:noRegion>42000 Varaždin</wicri:noRegion>
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<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Ruder Boškovic Institute, 54 Bijenička Cesta, P.O. Box 180</s1>
<s2>10002 Zagreb</s2>
<s3>HRV</s3>
<sZ>1 aut.</sZ>
</inist:fA14>
<country>Croatie</country>
<wicri:noRegion>10002 Zagreb</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Studenyak, I P" uniqKey="Studenyak I">I. P. Studenyak</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Uzhhorod State University, 46 Pidhirna St.</s1>
<s2>Uzhhorod 88000</s2>
<s3>UKR</s3>
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</inist:fA14>
<country>Ukraine</country>
<wicri:noRegion>Uzhhorod 88000</wicri:noRegion>
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</author>
<author><name sortKey="Kovacs, Gy S" uniqKey="Kovacs G">Gy. S. Kovacs</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Uzhhorod State University, 46 Pidhirna St.</s1>
<s2>Uzhhorod 88000</s2>
<s3>UKR</s3>
<sZ>2 aut.</sZ>
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<author><name sortKey="Mitrovcij, V V" uniqKey="Mitrovcij V">V. V. Mitrovcij</name>
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<author><name sortKey="Gurzan, M I" uniqKey="Gurzan M">M. I. Gurzan</name>
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<country>Ukraine</country>
<wicri:noRegion>Uzhhorod 88000</wicri:noRegion>
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<author><name sortKey="Voroshilov, Yu V" uniqKey="Voroshilov Y">Yu. V. Voroshilov</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Uzhhorod State University, 46 Pidhirna St.</s1>
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<s3>UKR</s3>
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<sZ>3 aut.</sZ>
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<country>Ukraine</country>
<wicri:noRegion>Uzhhorod 88000</wicri:noRegion>
</affiliation>
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<publicationStmt><idno type="inist">03-0118423</idno>
<date when="2002">2002</date>
<idno type="stanalyst">PASCAL 03-0118423 INIST</idno>
<idno type="RBID">Pascal:03-0118423</idno>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption edge</term>
<term>Absorption spectra</term>
<term>Band structure</term>
<term>Electron-phonon interactions</term>
<term>Experimental study</term>
<term>Indium Thiophosphates</term>
<term>Layered crystals</term>
<term>Temperature dependence</term>
<term>Ternary compounds</term>
<term>Urbach rule</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Spectre absorption</term>
<term>Limite absorption</term>
<term>Interaction électron phonon</term>
<term>Dépendance température</term>
<term>Structure bande</term>
<term>Règle Urbach</term>
<term>Cristal lamellaire</term>
<term>Indium Thiophosphate</term>
<term>Composé ternaire</term>
<term>Etude expérimentale</term>
<term>Modèle Einstein</term>
<term>In4(P2S6)3</term>
<term>In P S</term>
<term>7820C</term>
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<front><div type="abstract" xml:lang="en">The optical absorption edge of In<sub>4</sub>
(P<sub>2</sub>
S<sub>6</sub>
)<sub>3</sub>
 layered crystals is studied in the temperature range 77-355 K. In the spectral range of direct optical transitions, the absorption edge is of Urbach shape. Electron-phonon interaction result in the smearing of energy bands and, consequently, in appearing of Urbach absorption tails. The temperature variation of the optical pseudogap E*<sub>g</sub>
 and the absorption edge energy width w are well described in the Einstein model. Strong anisotropy of the absorption edge spectral position and shape, as well as of electron-phonon interaction, is revealed.</div>
</front>
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S<sub>6</sub>
)<sub>3</sub>
 layered crystals</s1>
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<fA14 i1="01"><s1>Geotechnical Department Varaždin, University of Zagreb, 7 Hallerova Apleja</s1>
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<sZ>1 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>Ruder Boškovic Institute, 54 Bijenička Cesta, P.O. Box 180</s1>
<s2>10002 Zagreb</s2>
<s3>HRV</s3>
<sZ>1 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>Uzhhorod State University, 46 Pidhirna St.</s1>
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(P<sub>2</sub>
S<sub>6</sub>
)<sub>3</sub>
 layered crystals is studied in the temperature range 77-355 K. In the spectral range of direct optical transitions, the absorption edge is of Urbach shape. Electron-phonon interaction result in the smearing of energy bands and, consequently, in appearing of Urbach absorption tails. The temperature variation of the optical pseudogap E*<sub>g</sub>
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<s5>03</s5>
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<fC03 i1="03" i2="3" l="FRE"><s0>Interaction électron phonon</s0>
<s5>04</s5>
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<s5>04</s5>
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<s5>06</s5>
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<s5>08</s5>
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<s4>INC</s4>
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<s4>INC</s4>
<s5>54</s5>
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Specific features of the optical absorption edge anisotropy in In4(P2S6)3 layered crystals

Specific features of the optical absorption edge anisotropy in In4(P2S6)3 layered crystals

Descripteurs français

English descriptors

Abstract

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Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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