Anisotropic excitons in (formula presented) from orientation-dependent electron-energy-loss spectroscopy

Nan Jiang; Bin Jiang; John Spence; R. C. Yu; S. C. Li; C. Q. Jin

doi:10.1103/PhysRevB.66.172502

Anisotropic excitons in (formula presented) from orientation-dependent electron-energy-loss spectroscopy

Nan Jiang, Bin Jiang, John Spence, R. C. Yu, S. C. Li, C. Q. Jin

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The momentum transfer in electron-energy-loss spectra (EELS) recorded in an electron microscope can be controlled in a manner akin to polarization-dependent soft-x-ray absorption spectroscopy, however with much greater spatial resolution. Here we report orientation-dependent EELS from fine-grained (formula presented) for both B K and Mg (formula presented) edges. Calculations based on an excited final state are used to suggest an anisotropic exciton for the peak at 55 eV at the Mg (formula presented) edge.

Original language	English (US)
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.66.172502
State	Published - Jan 1 2002

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.66.172502

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abstract = "The momentum transfer in electron-energy-loss spectra (EELS) recorded in an electron microscope can be controlled in a manner akin to polarization-dependent soft-x-ray absorption spectroscopy, however with much greater spatial resolution. Here we report orientation-dependent EELS from fine-grained (formula presented) for both B K and Mg (formula presented) edges. Calculations based on an excited final state are used to suggest an anisotropic exciton for the peak at 55 eV at the Mg (formula presented) edge.",

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AU - Jiang, Nan

AU - Jiang, Bin

AU - Spence, John

AU - Yu, R. C.

AU - Li, S. C.

AU - Jin, C. Q.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - The momentum transfer in electron-energy-loss spectra (EELS) recorded in an electron microscope can be controlled in a manner akin to polarization-dependent soft-x-ray absorption spectroscopy, however with much greater spatial resolution. Here we report orientation-dependent EELS from fine-grained (formula presented) for both B K and Mg (formula presented) edges. Calculations based on an excited final state are used to suggest an anisotropic exciton for the peak at 55 eV at the Mg (formula presented) edge.

AB - The momentum transfer in electron-energy-loss spectra (EELS) recorded in an electron microscope can be controlled in a manner akin to polarization-dependent soft-x-ray absorption spectroscopy, however with much greater spatial resolution. Here we report orientation-dependent EELS from fine-grained (formula presented) for both B K and Mg (formula presented) edges. Calculations based on an excited final state are used to suggest an anisotropic exciton for the peak at 55 eV at the Mg (formula presented) edge.

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

ER -

Anisotropic excitons in (formula presented) from orientation-dependent electron-energy-loss spectroscopy

Abstract

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