A monochromatized multiple energy laboratory UV source for k-space imaging

Pillo, Th.; Patthey, L.; Boschung, E.; Hayoz, J.; Aebi, Philipp

doi:10.1016/s0368-2048(98)00304-1

Cited by 26 publications

(5 citation statements)

References 26 publications

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“…In all cases the same sample was used, and the degree of reduction was increased by controlling the annealing temperature and the cycle duration. ARUPS measurements were performed using monochromatized He-I radiation from a He discharge lamp in combination with a VG EscaLab Mk II photoelectron spectrometer (20 meV resolution), and a sample goniometer for full hemispherical Angular Resolved Photoemission Spectroscopy (ARPES) [25]. The angular acceptance and resolution is 1 degree full-cone.…”

Section: Methodsmentioning

confidence: 99%

Valence band electronic structure characterization of the rutile TiO2 (110)-(1×2) reconstructed surface

et al. 2013

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The electronic structure of the TiO 2 (110)-(1x2) surface has been studied by means of angular resolved ultraviolet photoemission spectroscopy (ARUPS). The valence band dispersion along the high symmetry surface directions, [001] and [1-10], has been recorded. The experimental data show no dispersion of the band-gap Ti 3d states. However, the existence of dispersive bands along the [001] direction located at about 7eV below the Fermi Level is reported. The existence of two different contributions in the emission from the defects-related state located in the gap of the surface is univocally shown for the first time.

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Section: Methodsmentioning

confidence: 99%

Valence band electronic structure characterization of the rutile TiO2 (110)-(1×2) reconstructed surface

et al. 2013

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“…Full hemispherical ARPES experiments were performed in a modified Vacuum Generator ESCALAB Mark II spectrometer with a residual gas pressure of 2 × 10 −11 mbar equipped with a Mg K α (hν = 1253.6 eV) X-ray anode, a monochromatized He discharge lamp providing He Iα (hν = 21.2 eV) radiation [25], and a three channeltron hemispherical electrostatic analyzer kept fixed in space during measurements. The sample is mounted on a manipulator with two motorized and computer controlled rotational axes and may be cooled via a closed cycle refrigerator.…”

Section: Experiments and Calculationmentioning

confidence: 99%

Fermi-surface-induced lattice distortion inNbTe2

Battaglia¹,

Cercellier²,

Clerc³

et al. 2005

Phys. Rev. B

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The origin of the monoclinic distortion and domain formation in the quasi two-dimensional layer compound NbTe2 is investigated. Angle-resolved photoemission shows that the Fermi surface is pseudogapped over large portions of the Brillouin zone. Ab initio calculation of the electron and phonon bandstructure as well as the static RPA susceptibility lead us to conclude that Fermi surface nesting and electron-phonon coupling play a key role in the lowering of the crystal symmetry and in the formation of the charge density wave phase.

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“…These measurement modi are complementary in terms of range in k-space and energy and provide a global and yet detailed view of the electronic structure in the vicinity of the Fermi level. All presented measurements were obtained using monochromatized He I radiation, 24 the combined angular resolution of sample manipulator and energy analyzer is Ϸ1°and the energy resolution 50 meV. All calculations rely on the published structural data from Pearsson.…”

Section: Experiments and Calculationmentioning

confidence: 99%

Fermi-surface topology of rare-earth dihydrides

et al. 2004

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We report high-resolution angle-resolved photoemission experiments on epitaxial thin films of different rare-earth (RE) dihydrides ͑RE= Gd, La͒ and of YH 2 and ScH 2 . It is found through ab initio calculations and confirmed by Fermi surface mapping that the electronic structure becomes very similar upon hydrogenation, rendering the studied dihydrides isoelectronic. We propose that the dihydride phase acts as a common precursor state for the formation of the insulating trihydride phase. For states with higher binding energies (which exhibit considerable H character) the agreement between calculation and measurement is less convincing. Independent of the difficulties to describe these hydrogen related states, we note in the comparison between experiment and calculation a very convincing description of the Fermi surface for the dihydrides. Therefore we trace the apparent inability of density, functional theory to describe the hygrogenation up to the trihydride phase to an insufficient description of hydrogen states in general and, in particular, involving octahedral sites.

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A monochromatized multiple energy laboratory UV source for k-space imaging

Cited by 26 publications

References 26 publications

Valence band electronic structure characterization of the rutile TiO2 (110)-(1×2) reconstructed surface

Valence band electronic structure characterization of the rutile TiO2 (110)-(1×2) reconstructed surface

Fermi-surface-induced lattice distortion inNbTe2

Fermi-surface topology of rare-earth dihydrides

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