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pi-Electron ferromagnetism in metal-free carbon probed by soft x-ray dichroism

Ohldag, H and Tyliszczak, T and Hoehne, R and Spemann, D and Esquinazi, P and Ungureanu, M and Butz, T (2007) pi-Electron ferromagnetism in metal-free carbon probed by soft x-ray dichroism. PHYSICAL REVIEW LETTERS, 98 (18).

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Elemental carbon represents a fundamental building block of matter and the possibility of ferromagnetic order in carbon has attracted widespread attention. However, the origin of magnetic order in such a light element is only poorly understood and has puzzled researchers. We present a spectromicroscopy study at room temperature of proton irradiated metal-free carbon using the elemental and chemical specificity of x-ray magnetic circular dichroism. We demonstrate that the magnetic order in the investigated system originates only from the carbon pi-electron system.

Item Type:Article
Subjects:Analytical Science > Microscopy and probe methods
Physical Science > Nanomagnetics
Analytical Science > Beam methods
ID Code:1658
Deposited By:Mark Morrison
Deposited On:08 Jan 2009 12:45
Last Modified:13 Feb 2009 09:27

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