Anisotropy of electronic structure and spectral excitations in oxide superconductors via low loss EELS

Wang, Y.Y.; Cheng, Sze‐Chuh; Dravid, Vinayak P.

doi:10.1016/s0968-4328(99)00041-4

Cited by 8 publications

(3 citation statements)

References 37 publications

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“…This capability has been exploited as a means of exploring the mechanisms of electron scattering in solids [79][80][81][82][83][84][85][86][87][88]. In the low-loss region, surface plasmons, bulk plasmons and radiation-loss processes are found to have distinctly different dispersion ðo À qÞ characteristics, so dispersion (or lack of it) can help to identify spectral peaks, even in amorphous materials [89].…”

Section: Momentum Resolutionmentioning

confidence: 99%

Limits to the spatial, energy and momentum resolution of electron energy-loss spectroscopy

2007

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Section: Momentum Resolutionmentioning

confidence: 99%

Limits to the spatial, energy and momentum resolution of electron energy-loss spectroscopy

2007

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“…In addition, it is possible to obtain momentum-resolved EELS spectra (MREELS) showing the momentum (q) dependence (dispersion) of various excitations thereby probing bandstructures, bonding anisotropy, as well as indirect, and dipole-forbidden excitations. [1][2][3][4][5][6][7][8] However, obtaining momentum resolved spectra from ultrathin films, heterostructures, and nanostructures at high spatial resolution has remained difficult.…”

mentioning

confidence: 99%

“…The momentum information is accessed by acquiring the EELS spectra in the diffraction plane of the TEM. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] The scattering geometry for a MREELS experiment is presented in Fig. 1(a).…”

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confidence: 99%

Spatially and momentum resolved energy electron loss spectra from an ultra-thin PrNiO3 layer

Kinyanjui

Benner

Pavia

et al. 2015

Applied Physics Letters

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We present an experimental approach which allows for the acquisition of spectra from ultra-thin films at high spatial, momentum, and energy resolutions. Spatially and momentum (q) resolved electron energy loss spectra have been obtained from a 12 nm ultra-thin PrNiO3 layer using a nano-beam electron diffraction based approach which enabled the acquisition of momentum resolved spectra from individual, differently oriented nano-domains and at different positions of the PrNiO3 thin layer. The spatial and wavelength dependence of the spectral excitations are obtained and characterized after the analysis of the experimental spectra using calculated dielectric and energy loss functions. The presented approach makes a contribution towards obtaining momentum-resolved spectra from nanostructures, thin film, heterostructures, surfaces, and interfaces.

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Probing the electronic structure of ZnO nanowires by valence electron energy loss spectroscopy

Wang

Egerton

2007

Micron

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Anisotropy of electronic structure and spectral excitations in oxide superconductors via low loss EELS

Cited by 8 publications

References 37 publications

Limits to the spatial, energy and momentum resolution of electron energy-loss spectroscopy

Limits to the spatial, energy and momentum resolution of electron energy-loss spectroscopy

Spatially and momentum resolved energy electron loss spectra from an ultra-thin PrNiO3 layer

Probing the electronic structure of ZnO nanowires by valence electron energy loss spectroscopy

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