ThuliumV1, Pascal, Checkpoint, bibRecord, 001343

Electron properties and surface effects of rare-earth systems

Identifieur interne : 001343 ( Pascal/Checkpoint ); précédent : 001342; suivant : 001344

Electron properties and surface effects of rare-earth systems

Auteurs : C. Laubschat [Allemagne]

Source :

Applied physics. A, Materials science & processing

RBID : Pascal:98-0046699

Descripteurs français

Pascal (Inist)
- Etat électronique surface, Structure électronique, Hybridation, Valence, Composé valence mixte, Modèle itinérant, Spectrométrie photoélectron, Photoémission inverse, Niveau coeur, Etat multiplet, Effet Fano, Délocalisation électronique, Couche mince, Terbium, Thulium, Etude expérimentale, 7320A, 7960D.
Wicri :
- geographic : Valence (Drôme).

English descriptors

KwdEn :
- Core levels, Electron delocalization, Electronic structure, Experimental study, Fano effect, Hybridization, Inverse photoemission, Itinerant model, Mixed-valence compounds, Multiplet state, Photoelectron spectroscopy, Surface electron state, Terbium, Thin films, Thulium, Valence.

Abstract

Recent experimental results concerning the surface-related electronic structure of rare-earth solids are presented. Special attention is paid to the occurrence of surface-valence transitions in trivalent or mixed-valent compounds of Sm, Eu, Tm, and Yb that are due to energetically lowering of unoccupied 4f-states caused by the reduced atomic coordination at the surface. Similar phenomena are encountered in Ce-systems leading to a decrease of 4f-hybridization in the outermost atomic surface layer. The importance of this phenomenon for the correct interpretation of electron-spectroscopic data of Ce-systems is discussed. Experimental evidence for transitions from a localized to an itinerant behavior of the 4f-states is obtained for CeRh₃.

Affiliations:

Allemagne

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Pascal:98-0046699

Le document en format XML

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<author><name sortKey="Laubschat, C" sort="Laubschat, C" uniqKey="Laubschat C" first="C." last="Laubschat">C. Laubschat</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institut für Oberflächenphysik und Mikrostrukturphysik, TU Dresden</s1>
<s2>01062 Dresden</s2>
<s3>DEU</s3>
<sZ>1 aut.</sZ>
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<country>Allemagne</country>
<wicri:noRegion>01062 Dresden</wicri:noRegion>
<wicri:noRegion>TU Dresden</wicri:noRegion>
<wicri:noRegion>01062 Dresden</wicri:noRegion>
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<author><name sortKey="Laubschat, C" sort="Laubschat, C" uniqKey="Laubschat C" first="C." last="Laubschat">C. Laubschat</name>
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<term>Electron delocalization</term>
<term>Electronic structure</term>
<term>Experimental study</term>
<term>Fano effect</term>
<term>Hybridization</term>
<term>Inverse photoemission</term>
<term>Itinerant model</term>
<term>Mixed-valence compounds</term>
<term>Multiplet state</term>
<term>Photoelectron spectroscopy</term>
<term>Surface electron state</term>
<term>Terbium</term>
<term>Thin films</term>
<term>Thulium</term>
<term>Valence</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Etat électronique surface</term>
<term>Structure électronique</term>
<term>Hybridation</term>
<term>Valence</term>
<term>Composé valence mixte</term>
<term>Modèle itinérant</term>
<term>Spectrométrie photoélectron</term>
<term>Photoémission inverse</term>
<term>Niveau coeur</term>
<term>Etat multiplet</term>
<term>Effet Fano</term>
<term>Délocalisation électronique</term>
<term>Couche mince</term>
<term>Terbium</term>
<term>Thulium</term>
<term>Etude expérimentale</term>
<term>7320A</term>
<term>7960D</term>
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<front><div type="abstract" xml:lang="en">Recent experimental results concerning the surface-related electronic structure of rare-earth solids are presented. Special attention is paid to the occurrence of surface-valence transitions in trivalent or mixed-valent compounds of Sm, Eu, Tm, and Yb that are due to energetically lowering of unoccupied 4f-states caused by the reduced atomic coordination at the surface. Similar phenomena are encountered in Ce-systems leading to a decrease of 4f-hybridization in the outermost atomic surface layer. The importance of this phenomenon for the correct interpretation of electron-spectroscopic data of Ce-systems is discussed. Experimental evidence for transitions from a localized to an itinerant behavior of the 4f-states is obtained for CeRh<sub>3</sub>
.</div>
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<fA14 i1="01"><s1>Institut für Oberflächenphysik und Mikrostrukturphysik, TU Dresden</s1>
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<fC01 i1="01" l="ENG"><s0>Recent experimental results concerning the surface-related electronic structure of rare-earth solids are presented. Special attention is paid to the occurrence of surface-valence transitions in trivalent or mixed-valent compounds of Sm, Eu, Tm, and Yb that are due to energetically lowering of unoccupied 4f-states caused by the reduced atomic coordination at the surface. Similar phenomena are encountered in Ce-systems leading to a decrease of 4f-hybridization in the outermost atomic surface layer. The importance of this phenomenon for the correct interpretation of electron-spectroscopic data of Ce-systems is discussed. Experimental evidence for transitions from a localized to an itinerant behavior of the 4f-states is obtained for CeRh<sub>3</sub>
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<s5>01</s5>
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<s5>01</s5>
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<s5>07</s5>
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<s5>10</s5>
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<s5>11</s5>
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<s5>11</s5>
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<fC03 i1="11" i2="X" l="SPA"><s0>Efecto Fano</s0>
<s5>11</s5>
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<fC03 i1="12" i2="X" l="FRE"><s0>Délocalisation électronique</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Electron delocalization</s0>
<s5>12</s5>
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<s2>NC</s2>
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<s2>NC</s2>
<s5>14</s5>
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<fC03 i1="17" i2="3" l="FRE"><s0>7320A</s0>
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<s2>NC</s2>
<s5>16</s5>
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<s2>NC</s2>
<s5>16</s5>
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<s5>17</s5>
</fC07>
<fC07 i1="02" i2="3" l="ENG"><s0>Rare earth alloys</s0>
<s5>17</s5>
</fC07>
<fN21><s1>026</s1>
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</record>

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Electron properties and surface effects of rare-earth systems

Electron properties and surface effects of rare-earth systems

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri