Optical Properties of Cerium and Uranium Compounds

Schoenes, J.

doi:10.1007/978-1-4757-1538-5_15

Cited by 15 publications

(2 citation statements)

References 5 publications

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“…Thus, there can be no doubt that the f ... dt2g transition occurs near 0.5 eV (probably 0.4 eV) in CeSb. We note also that in cerium monochalcogenides the f .. dt.2g peak is observed in 01xx near 2.5 eV (14) corroborating the shift of the f ... dt2g transition going from CeTe to CeSb. In a recent letter (1) the assignment of f ... d transitions in the NaCI-type cerium and uranium compounds has been questionned on the basis of a very qualitative and unphysical model.…”

Section: Itinerant-like Interband Transitionssupporting

confidence: 84%

Lanthanide and Actinide Compounds With Record Magneto-Otpical Effects

Schoenes

1987

J. Magn. Soc. Jpn.

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The Faraday rotation of EuS and the polar Kerr-rotation and-ellipticity spectra for lanthanide and actinide compounds with signals exceeding 3 deg are analyzed in terms of the off-diagonal conductivity and various optical parameters. It is shown that in EuO, USbo. aTeo. 2 and CeSb the large Kerr-rotation angles of ~ 7, 9 and 14 deg, respectively, are dominated by f ~ d interband transitions. On the other hand, the Kerr rotation of 6 deg in U3As4 and the Kerr ellipticity of 3.6 deg in TmSe are due to intraband transitions. Especially the latter compound is peculiar, because its maximum ellipticity results from an enhanced plasma edge splitting. For most materials microscopic models are presented which describe quantitatively the magneto-optical properties.

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Section: Itinerant-like Interband Transitionssupporting

confidence: 84%

Lanthanide and Actinide Compounds With Record Magneto-Otpical Effects

Schoenes

1987

J. Magn. Soc. Jpn.

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“…Ab initio calculations 16 of the optical spectrum of CeN, based on the assumption of itinerant 4 f 's, could fully reproduce the experimental optical spectrum. 17 For CeP, angular-resolved photoemission revealed a narrow, quasiparticle 4 f band just below the Fermi energy. 18 Also, the optical spectra of YbN and YbP were interpreted in terms of an unoccupied 4 f state being closely above the Fermi energy.…”

Section: Introductionmentioning

confidence: 97%

Experimental and theoretical investigation of optical properties of dysprosium monopnictides

Schoenes¹,

Repond²,

Hulliger³

et al. 2003

Phys. Rev. B

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The electronic and optical properties of DyP and DyBi are investigated both experimentally and computationally. The reflectivity spectra, which have been measured up to 12 eV on single crystals, display richly peaked spectral structures that are analogous for both pnictides. From the measured reflectivities the plasma frequencies, Drude relaxation times, and optical conductivity spectra are derived. The fitted Drude conductivity reveals that DyP and DyBi are semimetals with a number of free carriers of about 0.16 and 0.23 per formula unit, respectively. The very-structured experimental optical conductivity spectra are compared to calculated spectra, which are computed using two different approaches to the Dy 4 f states: the open-core approach and the L͑S͒DAϩU approach in three versions. These approaches to the 4 f states lead to very similar optical spectra. There exists a reasonable agreement between calculation and experiment for a number of the spectral features, which are interpreted by specific interband transitions within the calculated band structure. The agreement between theory and experiment substantiates that the 4 f electrons do not participate in the bonding. The differences that remain between theory and experiment for some of the spectral features do not appear to rest on aspects of the treatment of the 4 f states, but rather to be intrinsic shortcomings in the description of the other band states.

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Figs. 50 - 79

Suski¹,

Palewski²

Landolt-Börnstein - Group III Condensed Matter

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Optical Properties of Cerium and Uranium Compounds

Cited by 15 publications

References 5 publications

Lanthanide and Actinide Compounds With Record Magneto-Otpical Effects

Lanthanide and Actinide Compounds With Record Magneto-Otpical Effects

Experimental and theoretical investigation of optical properties of dysprosium monopnictides

Figs. 50 - 79

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