Lifetime effect on the multiplet structure of 4<i>d</i>x-ray-photoemission spectra in heavy rare-earth elements

The electronic structure of the ternary RAgSn (R=Ce,Pr,Nd,Dy) compounds which crystallize in the hexagonal LiGaGe-type structure was studied by X-ray photoemission spectroscopy. Core-levels and valence bands were investigated. The X-ray photoemission spectroscopy valence bands are compared with the ones calculated using the spin-polarized tight-binding linear muffin-tin orbital method. The obtained results indicate that the valence bands are mainly determined by the Ag 4d band. The spin-orbit splitting values Δso determined from the XPS spectra of 3d512 and 3d3/2 are equal to 18.8 eV for R = Ce, 20.2 eV for R = Pr and 22.6 eV for R = Nd. The analysis of these spectra on the basis of the Gunnarsson-Schönhammer model gives a hybridization of f orbitals with the conduction band. The calculation of the total energy for two models of the crystal structure: an ordered of the LiGaGe-type and a disordered one of the CaIn2-type indicate that in these compounds 'the LiGaGe-type structure is stable. Additionally, the temperature dependences of the electrical resistivity of CeAgSn and DyAgSn are investigated. At high temperatures the resistivity is not a linear function of temperature which indicates an electron-phonon interaction in the presence of a small s-d scattering, whereas at low temperatures anomalies connected with the magnetic phase transitions are observed.

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“…The positions of the peaks are in good agreement with the ones calculated previously for metallic Dy in Ref. [17]. [17]).…”

Section: Core Levelssupporting

confidence: 80%

Electronic and Transport Properties of Ragsn (R=Ce,Pr,Nd,Dy) Compounds

et al. 2000

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“…At 176.5 eV the maximum corresponding to the Tm 4d state is detected. This value is between those for pure metallic Tm (175.5 eV) and Tm in oxides (177.4 eV) [12]. This confirms that the bonding in TmPdIn has a small deviation from the bonding in pure metal, which is characteristic of intermetallics.…”

Section: Resultssupporting

confidence: 70%

Electronic Structure of TmPdIn

et al. 2016

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Electronic structure of a ternary TmPdIn compound, which crystallizes in the hexagonal ZrNiAl-type structure, was studied by X-ray photoemission spectroscopy and ultraviolet photoemission spectroscopy. Density of states in the valence band was calculated by means of the augmented plane wave/local orbital method based on density functional theory. The results showed that the valence band is formed mainly of Tm 4f and Pd 4d states. In the ultraviolet photoemission spectra one can distinguish Pd 4d maximum and Tm 4f multiplet peaks, which are displaced with respect to those of pure Tm.

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“…For example, the sum rule equating RIXS intensity (summed over energy loss and momentum) to the XAS spectrum is broken when core hole lifetimes are incorrect. At resonances in the EUV, a particularly broad range of core hole lifetimes can be observed, and core hole lifetime can vary significantly as a function of incident energy at a given resonance edge [6,[31][32][33].…”

Section: Incident Energy Dependence Of Core Hole Lifetimementioning

confidence: 99%

“…Much better correspondence with data is achieved when the differing decay rates for different resonance states are taken into account [see Figure 5A right), in modeling methods that employ a self consistent lifetime correction (SCLC) for the dependence of core hole decay rate on the multiplet symmetry (see [6,31,32] and Appendix). Figure 5B illustrates the scattering channels that underlie M-edge scattering in nickel oxide.…”

Section: Incident Energy Dependence Of Core Hole Lifetimementioning

confidence: 99%

“…The lifetime of shallow core hole resonance states accessed in the EUV has a complex dependence on incident photon energy [6,[31][32][33], and can provide the option to access both long and short core hole lifetimes at the same resonance edge. The effective shake-up perturbation caused by shallow core holes also tends to be weaker, and can exclude some classes of excitations that are not directly created by the action of the scattering photon operators (e.g., multi-magnons, phonons, charge transfer modes) [3,4,7,8,10,28,34,35].…”

Section: Introductionmentioning

confidence: 99%

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Extending resonant inelastic X-ray scattering to the extreme ultraviolet

et al. 2015

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In resonant inelastic X-ray scattering (RIXS), core hole resonance modes are used to enhance coupling between photons and low energy electronic degrees of freedom. Resonating with shallow core holes accessed in the extreme ultraviolet (EUV) can provide greatly improved energy resolution at standard resolving power, but has been found to often yield qualitatively different spectra than similar measurements performed with higher energy X-rays. This paper uses experimental data and multiplet-based numerical simulations for the M-edges of Co-, Ni-, and Cu-based Mott insulators to review the properties that distinguish EUV RIXS from more commonly performed higher energy measurements. Key factors such as the origin of the strong EUV elastic line and advantages of EUV spectral functions over soft X-ray RIXS for identifying intrinsic excitation line shapes are discussed.

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Lifetime effect on the multiplet structure of 4dx-ray-photoemission spectra in heavy rare-earth elements

Cited by 126 publications

References 16 publications

Electronic and Transport Properties of Ragsn (R=Ce,Pr,Nd,Dy) Compounds

Electronic and Transport Properties of Ragsn (R=Ce,Pr,Nd,Dy) Compounds

Electronic Structure of TmPdIn

Extending resonant inelastic X-ray scattering to the extreme ultraviolet

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