Applicability of the Single Impurity Model to Photoemission Spectroscopy of Heavy Fermion Ce Compounds

Garnier, M. G.; Purdie, D.; Hengsberger, Matthias; Baer, Y.; Delley, B.

doi:10.1103/physrevlett.78.4127

Cited by 105 publications

(63 citation statements)

References 16 publications

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“…Such temperature dependence has been re-2 2 2 2 slope-reduction near E . We should also note that ported for Ce [19] and Yb [49] compounds, but also F these two idealized k-space locations are expected to disputed [18,50]. Experimentally no significant temonly exhibit modest mass enhancements (m* / m , perature variation in photoemission has yet been 10).…”

Section: F -D Mixingmentioning

confidence: 99%

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Comparative study of the electronic structure of XRu2Si2: probing the Anderson lattice

Denlinger

Gweon

Allen

et al. 2001

Journal of Electron Spectroscopy and Related Phenomena

127

141

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Section: F -D Mixingmentioning

confidence: 99%

“…One direction has been to push the photoing the coexistence of magnetism and superconducemission technique close to its ultimate energy tivity has resulted in URu Si being one of the most 2 2 resolution at very low temperatures in order to access heavily studied 5f systems, continuing up to the the small energy scales of the Kondo effect [19].…”

mentioning

confidence: 99%

Comparative study of the electronic structure of XRu2Si2: probing the Anderson lattice

Denlinger

Gweon

Allen

et al. 2001

Journal of Electron Spectroscopy and Related Phenomena

127

141

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“…Since the 4 f states in the Kondo resonance in the surface are very different from those in the bulk, the SIAM approach for RPES has been a subject of controversy. [10][11][12][13] To further investigate the electronic structures and the bulk properties of heavy fermion materials, we have chosen to study the well known hexaboride CeB 6 compound, which is known to exhibit dense Kondo properties. The present measurements were performed using high-resolution resonant inelastic x-ray scattering ͑RIXS͒ spectroscopy with selective excitation energies at the Ce 3d and 4d thresholds.…”

Section: Introductionmentioning

confidence: 99%

Electronic-structure investigation ofCeB6by means of soft-x-ray scattering

Magnuson¹,

Butorin²,

Guo³

et al. 2001

Phys. Rev. B

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The electronic structure of the heavy fermion compound CeB 6 is probed by resonant inelastic soft-x-ray scattering using photon energies across the Ce 3d and 4d absorption edges. The hybridization between the localized 4 f orbitals and the delocalized valence-band states is studied by identifying the different spectral contributions from inelastic Raman scattering and normal fluorescence. Pronounced energy-loss structures are observed below the elastic peak at both the 3d and 4d thresholds. The origin and character of the inelastic scattering structures are discussed in terms of charge-transfer excitations in connection to the dipole allowed transitions with 4 f character. Calculations within the single-impurity Anderson model with full multiplet effects are found to yield consistent spectral functions to the experimental data.

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“…[3][4][5] The question to be answered is, how the quantum critical fluctuations affects the electronic excitations and how it evolves as one goes from one side of QCP to the other side.…”

Section: Quantum Criticalitymentioning

confidence: 99%

“…The experimental spectra exhibit gradual increase in intensity of both the peaks with the increase in x that can be associated to the change in the Kondo temperature as discussed above and also observed earlier in other Ce-based compounds. 5 We compare the evolution of the intensities of the Kondo resonance peak and its spin-orbit split component in Fig. 6.…”

mentioning

confidence: 99%

Evolution of the Kondo resonance feature and its relationship to spin-orbit coupling across the quantum critical point in Ce ₂ Rh _1−x Co _x Si ₃

Patil¹,

Medicherla²,

Singh³

et al. 2011

EPL

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We investigate the evolution of the electronic structure of Ce2Rh1−xCoxSi3 as a function of x employing high resolution photoemission spectroscopy. Co substitution at the Rh sites in antiferromagnetic Ce2RhSi3 leads to a transition from an antiferromagnetic system to a Kondo system, Ce2CoSi3 via the Quantum Critical Point (QCP). High resolution photoemission spectra reveal distinct signature of the Kondo resonance feature (KRF) and its spin orbit split component (SOC) in the whole composition range indicating finite Kondo temperature scale at the quantum critical point. We observe that the intensity ratio of the Kondo resonance feature and its spin orbit split component, KRF/SOC gradually increases with the decrease in temperature in the strong hybridization limit. The scenario gets reversed if the Kondo temperature becomes lower than the magnetic ordering temperature. While finite Kondo temperature within the magnetically ordered phase indicates applicability of the spin density wave picture at the approach to QCP, the dominant temperature dependence of the spin-orbit coupled feature suggests importance of spin-orbit interactions in this regime.

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Applicability of the Single Impurity Model to Photoemission Spectroscopy of Heavy Fermion Ce Compounds

Cited by 105 publications

References 16 publications

Comparative study of the electronic structure of XRu2Si2: probing the Anderson lattice

Comparative study of the electronic structure of XRu2Si2: probing the Anderson lattice

Electronic-structure investigation ofCeB6by means of soft-x-ray scattering

Evolution of the Kondo resonance feature and its relationship to spin-orbit coupling across the quantum critical point in Ce ₂ Rh _1−x Co _x Si ₃

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Applicability of the Single Impurity Model to Photoemission Spectroscopy of Heavy Fermion Ce Compounds

Cited by 105 publications

References 16 publications

Comparative study of the electronic structure of XRu2Si2: probing the Anderson lattice

Comparative study of the electronic structure of XRu2Si2: probing the Anderson lattice

Electronic-structure investigation ofCeB6by means of soft-x-ray scattering

Evolution of the Kondo resonance feature and its relationship to spin-orbit coupling across the quantum critical point in Ce 2 Rh 1−x Co x Si 3

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Product

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Evolution of the Kondo resonance feature and its relationship to spin-orbit coupling across the quantum critical point in Ce ₂ Rh _1−x Co _x Si ₃