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Harte, W. E.; Szcezepanek, P. S.

doi:10.1103/physrevlett.42.1172

Cited by 14 publications

(2 citation statements)

References 16 publications

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“…I n addition this pattern, summarized in Fig. 1 b agrees with the SXAP spectra of Harte and Szczepanek [26]. We will like to emphasize other characteristic of this band structure: the first band (Fig.…”

Section: Conduction Bandsupporting

confidence: 85%

A First‐Principles Pseudopotential Model for the Strong Intrasite Interaction Applied to the 4f¹³ Configuration (Yb₂O₃)

López‐Aguilar

Costa‐Quintana

1984

Physica Status Solidi (b)

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The intrasite e-e interaction is included within the band structure model by means of a first principles pseudopotential method which is valid for integral and non integral configuration. The pseudopotential is applied to Yb,O, appearing in the semiconducting phase when one takes into account the screened 4 f 4 f interaction. The conduction band after the metal-semiconductor transition corresponds to the fulfilled 4f shell and this seems clearly mixed with the p, d bands. Moreover, the mechanism is analyzed for the delocalization and spread of the 4f excited states.Die Intraplatz-e-e-Wechselwirkung wird in das Bandstrukturmodell mittels einer ,,first-prin-cip1es"-Pseudopotentialmethode einbezogen, die fur integrale und nichtintegrale Konfiguration gultig ist. Das Pseudopotential wird auf Yb,O, angewendet, das in der halbleitenden Phase auftritt, wenn die abgeschirmte 4f4f-Wechselwirkung berucksichtigt wird. Nach dem Metall-Halbleiterubergang entspricht das Leitungsband der gefullten 4f-Schale und diese scheint merklich mit den p, d-Bandern gemischt zu sein. Daruber hinaus wird der Mechanismus fur die Delokalisierung und Verbreiterung der angeregten 4f-Zusfande analysiert.

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Section: Conduction Bandsupporting

confidence: 85%

A First‐Principles Pseudopotential Model for the Strong Intrasite Interaction Applied to the 4f¹³ Configuration (Yb₂O₃)

López‐Aguilar

Costa‐Quintana

1984

Physica Status Solidi (b)

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“…127 The APS spectra of transition metal dichalcogenides (TiS2, 120,122,125 TiSe2, 120,122 VS2,129 VSe2, 120,122,129 ZrS2, 122 and ZrSe2, 122 ) were presented. The results indicated that the spectra are in good agreement with the predictions of a conduction band self-convolution model.…”

Section: -143mentioning

confidence: 99%

Appearance Potential Spectroscopy (APS): Old Method, but Applicable to Study of Nano-structures

Fukuda

2010

ANAL. SCI.

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A simplified APS mechanism could be described in four steps: An old surface analytical method, appearance potential spectroscopy (APS), which can probe empty electronic states, is briefly reviewed, since it has an ability to be applied to studying nanostructures. Although the theoretical calculation of the APS spectra including a two-electron process is not much simpler than that of x-ray absorption spectroscopy (XAS) spectra with a one-electron process, measurements of the APS spectra are simpler than those of the XAS ones. A careful interpretation of the spectra would lead to a characteristic and simple surface chemical analysis.

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Coulomb (or Strong) Correlation Effects in the Band Structure of Eu₂O₃

López‐Aguilar

Costa‐Quintana

Muñoz

1982

Physica Status Solidi (b)

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Two band-structure calculations of Eu,O, are performed, one of them in the metallic phase and the other in the semiconducting phase; the difference between the corresponding band Hamiltonians is the occupation potential U(T) that includes the Coulomb correlation effects. In both phases, the 4f occupied bands are mixed with the 2p bands; this fact broadens these 4f bands so that its calculation is possible in this complex crystal lattice Ti. In the semiconducting band structure, the 4f empty bands are localized in the d-zone energy showing (4f, 5d) hybridization that produces a broadening still greater than for the 4f occupied bands. The semiconducting gap is I ? : -H i and its value is 3.7 eV.On a realis6 deux calculs de la structure des bandes du compost5 Eu,O,: l'un correspondant Q la phase mbtallique et l'autre B la phase semiconductrice. La diffhrence des calculs se traduit par l'addition du potentiel d'occupation ( U(T) que tient compte des effects de correlation coulombienne. On trouve que les bandes occupkes 4f sont melanghs avec les Btats 2p, ce qui produit un Blargissement des bandes 4f,qu'on a pu B calculer. De mbme, dans le calcul de la phase semiconductrice on trouve les Btats 4f hybrides avec les 6tats 5d, ce qui produit un Blargissement des Btats 4f plus important qui cklui correspondant aux Btats de la bande de valence. La gap du semiconducteur c'est 3,7 eV et correspond & la transition I ? : -Hi.

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M-Series Soft-X-Ray Appearance-Potential Spectroscopy ofYb2
W. E. Harte
¹
,
P. S. Szcezepanek
²

Abstract: finite sample size will lead to a very small, though finite, probability that thermally excited free vortices could occur in Phase I, and similarly for samples R > X ± 0 7 B. A. Huberman,-Ro Jo Myerson, and S. Doniach, Phys. Rev. Lett, 40, 780 (1978); V. Ambegaokar, B. I.

Cited by 14 publications

References 16 publications

A First‐Principles Pseudopotential Model for the Strong Intrasite Interaction Applied to the 4f¹³ Configuration (Yb₂O₃)

A First‐Principles Pseudopotential Model for the Strong Intrasite Interaction Applied to the 4f¹³ Configuration (Yb₂O₃)

Appearance Potential Spectroscopy (APS): Old Method, but Applicable to Study of Nano-structures

Coulomb (or Strong) Correlation Effects in the Band Structure of Eu₂O₃

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M-Series Soft-X-Ray Appearance-Potential Spectroscopy ofYb2W. E. Harte1, P. S. Szcezepanek2

Abstract: finite sample size will lead to a very small, though finite, probability that thermally excited free vortices could occur in Phase I, and similarly for samples R > X ± 0 7 B. A. Huberman,-Ro Jo Myerson, and S. Doniach, Phys. Rev. Lett, 40, 780 (1978); V. Ambegaokar, B. I.

Cited by 14 publications

References 16 publications

A First‐Principles Pseudopotential Model for the Strong Intrasite Interaction Applied to the 4f13 Configuration (Yb2O3)

A First‐Principles Pseudopotential Model for the Strong Intrasite Interaction Applied to the 4f13 Configuration (Yb2O3)

Appearance Potential Spectroscopy (APS): Old Method, but Applicable to Study of Nano-structures

Coulomb (or Strong) Correlation Effects in the Band Structure of Eu2O3

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M-Series Soft-X-Ray Appearance-Potential Spectroscopy ofYb2
W. E. Harte
¹
,
P. S. Szcezepanek
²

A First‐Principles Pseudopotential Model for the Strong Intrasite Interaction Applied to the 4f¹³ Configuration (Yb₂O₃)

A First‐Principles Pseudopotential Model for the Strong Intrasite Interaction Applied to the 4f¹³ Configuration (Yb₂O₃)

Coulomb (or Strong) Correlation Effects in the Band Structure of Eu₂O₃