Deducing the Density of Electronic States at the Fermi Level for Lithiated Carbons Using Combined Electrochemical and Electron Spin Resonance Measurements

2003 ◽  
Vol 107 (31) ◽  
pp. 7783-7787 ◽  
Author(s):  
Xiaorong Zhou ◽  
Lin Zhuang ◽  
Juntao Lu
Keyword(s):  
Electron Spin Resonance ◽  
Fermi Level ◽  
Electron Spin ◽  
Electronic States ◽  
Density Of Electronic States ◽  
Spin Resonance

Electron Spin Resonance and Raman Scattering Spectroscopy of Multi-Walled Carbon Nanotubes: A Function of Acid Treatment

2006 ◽  
Vol 6 (1) ◽  
pp. 135-140 ◽  
Author(s):  
T. Pietraß ◽  
J. L. Dewald ◽  
C. F. M. Clewett ◽  
D. Tierney ◽  
A. V. Ellis ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Spin Resonance ◽  
Fermi Level ◽  
Electron Spin ◽  
Acid Treatment ◽  
Transport Mechanism ◽  
Raman Scattering Spectroscopy ◽  
Spin Resonance ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

We compare the fundamental transport mechanism in multi-walled carbon nanotubes (MWNTs) by means of electron spin resonance (ESR) and Raman spectroscopy as a function of acid treatment. The ESR and Raman results show that the acid treatment reduces the density of states at the Fermi level. Defects introduced through the acid treatment move the Fermi level closer to the K points in the valence band, and consequently conduction is reduced. These defects are identified as Stone-Wales type from the Raman results.

Hybridized Electronic States in Dense Intermetallics as Studied by ESR

2011 ◽  
Vol 170 ◽  
pp. 170-173 ◽  
Author(s):  
Vladimir A. Ivanshin ◽  
T.O. Litvinova ◽  
A.A. Sukhanov ◽  
N.A. Ivanshin ◽  
B. Endeward
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Electronic States ◽  
Electronic Systems ◽  
Theoretical Studies ◽  
Strongly Correlated ◽  
Rkky Interaction ◽  
Conduction Electrons ◽  
Strongly Correlated Electronic Systems ◽  
Spin Resonance

We review electron spin resonance (ESR) experiments in several concentrated Yb-, Ce-, and Eu-based intermetallic systems. Recent theoretical studies attribute well resolved ESR signals with hybridization effects between 4f and conduction electrons (CE) in the presence of ferromagnetic (FM) fluctuations. We believe that the ESR absorption is caused here by a novel type of ESR excitations – hybridized electronic states, which are created in some strongly correlated electronic systems due to hybridization between the 4f-orbitals and the wavefunctions of the CE of the outer d, s, and p shells in conjunction with FM RKKY interaction.

Ionenumladungen in Zinksulfid und ihre analytische Auswertung durch Elektronenspinresonanz

1963 ◽  
Vol 18 (7) ◽  
pp. 818-822 ◽  
Author(s):  
F. Matossi ◽  
A. Räuber ◽  
F. W. Küpper
Keyword(s):  
Electron Spin Resonance ◽  
Fermi Level ◽  
Uv Irradiation ◽  
Electron Spin ◽  
Chromium Ions ◽  
Spin Resonance

Different kinds of doping in ZnS crystals lead to characteristic ion charge conversions of iron and chromium ions. This is shown by the esr of Fe3+ and Cr+ ions and the behavior of the esr lines with respect to illumination with uv. Doping with CuS gives Fe3+ ions; ZnS doped with Zinc or halogen shows Cr+ resonance after uv irradiation. The ion charge conversions are interpreted by changes in the FERMI level. Iron in ZnS crystals can be converted completely into Fe3+ through tempering for 24 hours at 800°C with CuS in evacuated quartz ampullae if the iron contents is not greater than about 10-3 % by weight. Fe3+ can then be determined quantitatively with electron spin resonance for concentrations between 10-3 and about 106% by weight. Tempering in sulphur vapor at 1050°C produces from the originally cubic and submicroscopically twinned crystals such that are hexagonal in the extent of about 60%.

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