Combined study of the ground and unoccupied electronic states of graphite by electron energy-loss spectroscopy

被引：13

作者：

Feng, Zhenbao ^{[1
,2
]}

Loeffler, Stefan ^{[1
]}

Eder, Franz ^{[3
]}

Su, Dangsheng ^{[2
]}

Meyer, Jannik C. ^{[3
]}

Schattschneider, Peter ^{[1
,4
]}

机构：

[1] Vienna Univ Technol, Univ Serv Ctr Transmiss Electron Microscopy, A-1040 Vienna, Austria

[2] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China

[3] Univ Vienna, Dept Phys, A-1090 Vienna, Austria

[4] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 18期

基金：

奥地利科学基金会;

关键词：

ABSORPTION FINE-STRUCTURE; FAST CHARGED-PARTICLES; COMPTON-SCATTERING; INELASTIC-COLLISIONS; SOLIDS; PROFILES; IONIZATION; MICROSCOPE; ANISOTROPY; GRAPHENE;

D O I：

10.1063/1.4829021

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Both the unoccupied and ground electronic states of graphite have been studied by electron energy-loss spectroscopy in a transmission electron microscope. Electron energy-loss near-edge structures of the K-edge of carbon have been investigated in detail for scattering angles from 0 to 2.8 mrad. The Pi(*) and sigma(*) components were separated. The angular and energy dependences of the Pi(*) and sigma(*) structures were in fair agreement with theory. Electron energy loss Compton spectra of graphite were recorded at scattering angles from 45 to 68 mrad. One Compton scattering spectrum was obtained in 1 min compared with several hours or days using photons. The contributions of core electrons were calculated by the exact Hartree-Slater method in the Compton scattering region. The electron Compton profile for graphite is in good agreement with other conventional Compton profile measurements, as well as with theory, thus establishing the validity of the technique. (c) 2013 AIP Publishing LLC.

引用

页数：8

共 40 条

[1] CRITICAL-EVALUATION OF HIGH-ENERGY ELECTRON-IMPACT SPECTROSCOPY TO MEASURE COMPTON PROFILES
BARLAS, AD
RUECKNER, WHE
WELLENSTEIN, HF
[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1978, 11 (19) : 3381 - 3400
[2] CARBON-1S NEAR-EDGE-ABSORPTION FINE-STRUCTURE IN GRAPHITE
BATSON, PE
[J]. PHYSICAL REVIEW B, 1993, 48 (04): : 2608 - 2610
[3] An overview of the theories used in Compton scattering calculations
Bergstrom, PM
Pratt, RH
[J]. RADIATION PHYSICS AND CHEMISTRY, 1997, 50 (01): : 3 - 29
[4] QUANTUM-MECHANICAL FIRST BORN BINARY ENCOUNTER THEORY OF ELECTRON-IMPACT IONIZATION .2. ELECTRON COMPTON-SCATTERING
BONHAM, RA
TAVARD, C
[J]. JOURNAL OF CHEMICAL PHYSICS, 1973, 59 (09) : 4691 - 4704
[5] BONHAM RA, 1977, COMPTON SCATTERING
[6] COMPTON PROFILE OF GRAPHITE MEASURED WITH 22.1 KEV PHOTONS AND SOLID-STATE DETECTOR
BONSE, U
SCHRODER, W
[J]. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1974, 23 (01): : 297 - 301
[7] A new approach to study bonding anisotropy with EELS
Botton, GA
[J]. JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 2005, 143 (2-3) : 129 - 137
[8] REAL-SPACE DETERMINATION OF ANISOTROPIC ELECTRONIC-STRUCTURE BY ELECTRON-ENERGY LOSS SPECTROSCOPY
BROWNING, ND
YUAN, J
BROWN, LM
[J]. ULTRAMICROSCOPY, 1991, 38 (3-4) : 291 - 298
[9] COMPTON-SCATTERING AND ELECTRON MOMENTUM DETERMINATION
COOPER, MJ
[J]. REPORTS ON PROGRESS IN PHYSICS, 1985, 48 (04) : 415 - 481
[10] COWAN RD, 1981, THOERY ATOMIC STRUCT

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