Valence-Band Dispersion in Angle-Resolved Resonant Photoemission from LaSb

Olson, C. G.; Benning, P. J.; Schmidt, Michael W.; Lynch, David W.; Canfield, Paul C.; Wieliczka, D. M.

doi:10.1103/physrevlett.76.4265

Cited by 43 publications

(25 citation statements)

References 16 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Valence-band dispersion of a sharp resonance in photoemission from LaSb has been reported and is interpreted in the same way. 45 In our case, the on-and off-resonant photon energies differ substantially, as do the corresponding wave vectors perpendicular to the surface. A variation in the matrix element may also be responsible for some of the features observed in the difference curves.…”

Section: B Resonant Photoemissionmentioning

confidence: 92%

Valence-band structure of epitaxially grownFe3O4(111)films

et al. 1998

View full text Add to dashboard Cite

It has recently been shown that well-ordered Fe 3 O 4 (111) films can be prepared epitaxially on clean Pt͑111͒ surfaces; various techniques have indicated that these multilayer films are chemically identical to bulk single crystals. We have studied the electronic structure of such an ordered Fe 3 O 4 (111) film using angle-resolved photoemission in conjunction with synchrotron radiation. The valence-band structure along the ⌫L symmetry line and the resonant emission enhancement across the Fe 3 p→3d excitation threshold have been examined in detail both above ͑at 300 K͒ and below ͑at 90 K͒ the Verwey transition temperature (ϳ120K) for magnetite. The observed band dispersion agrees reasonably well with band-structure calculations for the high-temperature phase, particularly near the Fermi level, suggesting that Fe 3 O 4 should be treated with band theory. Subtle differences in the valence-band structure are observed between the two temperatures, which may be attributed to a structural change and/or a charge ordering associated with the Verwey transition. The resonant behavior shows, however, no temperature dependence, indicating that resonant photoemission in Fe 3 O 4 remains a localized process and is not influenced by the Verwey transition. ͓S0163-1829͑98͒01231-4͔

show abstract

Section: B Resonant Photoemissionmentioning

confidence: 92%

Valence-band structure of epitaxially grownFe3O4(111)films

et al. 1998

View full text Add to dashboard Cite

show abstract

“…These compounds crystallize in simple fcc rock salt structure with Fm3m crystallographic space group. The lanthanum monopnictides are very promising for this kind of applications and subject for investigation in various theoretical and experimental studies [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Lattice dynamics and elastic properties of lanthanum monopnictides

Gökoğlu

Erkisi

2008

Solid State Communications

View full text Add to dashboard Cite

a b s t r a c tIn this study, first principles calculation results of the second order elastic constants and lattice dynamics of two lanthanum monopnictides, LaN and LaBi, which crystallize in rock-salt structure (B1 phase), are presented. Calculations were based on plane wave basis sets and pseudopotential methods in the framework of Density Functional Theory (DFT) with generalized gradient approximation. Elastic constants are calculated by tetragonal and orthorhombic distortions on cubic structure. Phonon dispersion spectra was constructed in the linear response approach of the Density Functional Perturbation Theory (DFPT). The complete phonon softening with negative frequencies and large elastic anisotropy were observed for LaN single crystal as a sign of the structural instability. The phonon dispersion curve for LaBi is typical for lanthanum monopnictides and does not show any anomalous physical property. The calculated structural quantities for both LaN and LaBi systems agree well with the available experimental and theoretical data.

show abstract

“…[19][20][21] Unfortunately, there is very little experimental data on the band structure of the rare-earth pnictides. Of the photoemission and inverse photoemission undertaken on this class of materials, [22][23][24][25] there are very few experimental band mappings. 24,25 In the previous experimental band structure studies of ErAs͑100͒ ͑Ref.…”

Section: Introductionmentioning

confidence: 99%

“…Of the photoemission and inverse photoemission undertaken on this class of materials, [22][23][24][25] there are very few experimental band mappings. 24,25 In the previous experimental band structure studies of ErAs͑100͒ ͑Ref. 24͒ some comparison with theory is possible, but much of the bulk band structure was not explored.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure of ErAs(100)

et al. 2003

View full text Add to dashboard Cite

The experimental band structure of the rare-earth pnictide erbium arsenide ͑ErAs͒, grown epitaxially on GaAs͑100͒, has been mapped out using photoelectron spectroscopy and inverse photoemission spectroscopy. The electronic structure is dominated by bulk bands qualitatively consistent with the calculated band structure. A number of additional nondispersing 4 f multiplet levels can be identified in the valence-band structure as well as at least one surface resonance band. From symmetry selection rules, photoemission provides strong evidence that the ⌬ 5 ͑or e͒ symmetry bands are a consequence of hybridization between Er and As, while the ⌬ 1 ͑or a 1 ) symmetry bands have possible contributions from nonbonding or antibonding states from Er ͑and/or As͒.

show abstract

Valence-Band Dispersion in Angle-Resolved Resonant Photoemission from LaSb

Cited by 43 publications

References 16 publications

Valence-band structure of epitaxially grownFe3O4(111)films

Valence-band structure of epitaxially grownFe3O4(111)films

Lattice dynamics and elastic properties of lanthanum monopnictides

Electronic structure of ErAs(100)

Contact Info

Product

Resources

About