Anisotropic excitons in MgB2 from orientation-dependent electron-energy-loss spectroscopy

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

Anisotropic excitons in MgB₂ 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

20 Scopus citations

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 MgB₂ for both B K and Mg L_2.3 edges. Calculations based on an excited final state are used to suggest an anisotropic exciton for the peak at 55 eV at the Mg L₂₃ edge.

Original language	English (US)
Article number	172502
Pages (from-to)	1725021-1725024
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	17
State	Published - Nov 1 2002

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

@article{8a22d4a2f5804a6db9dc6dc620455860,

title = "Anisotropic excitons in MgB2 from orientation-dependent electron-energy-loss spectroscopy",

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 MgB2 for both B K and Mg L2.3 edges. Calculations based on an excited final state are used to suggest an anisotropic exciton for the peak at 55 eV at the Mg L23 edge.",

author = "Nan Jiang and Bin Jiang and John Spence and Yu, {R. C.} and Li, {S. C.} and Jin, {C. Q.}",

year = "2002",

month = nov,

day = "1",

language = "English (US)",

volume = "66",

pages = "1725021--1725024",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "0163-1829",

publisher = "American Institute of Physics Publising LLC",

number = "17",

}

TY - JOUR

T1 - Anisotropic excitons in MgB2 from orientation-dependent electron-energy-loss spectroscopy

AU - Jiang, Nan

AU - Jiang, Bin

AU - Spence, John

AU - Yu, R. C.

AU - Li, S. C.

AU - Jin, C. Q.

PY - 2002/11/1

Y1 - 2002/11/1

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 MgB2 for both B K and Mg L2.3 edges. Calculations based on an excited final state are used to suggest an anisotropic exciton for the peak at 55 eV at the Mg L23 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 MgB2 for both B K and Mg L2.3 edges. Calculations based on an excited final state are used to suggest an anisotropic exciton for the peak at 55 eV at the Mg L23 edge.

UR - http://www.scopus.com/inward/record.url?scp=0036871547&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036871547&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0036871547

SN - 0163-1829

VL - 66

SP - 1725021

EP - 1725024

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

M1 - 172502

ER -

Anisotropic excitons in MgB₂ from orientation-dependent electron-energy-loss spectroscopy

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this