Magnetism in transition-metal-doped silicon nanotubes

Abhishek Kumar Singh, Tina M. Briere, Vijay Kumar, Yoshiyuki Kawazoe

Research output: Contribution to journalArticle

162 Citations (Scopus)

Abstract

Using first-principles density functional calculations, we show that hexagonal metallic silicon nanotubes can be stabilized by doping with [Formula presented] transition metal atoms. Finite nanotubes doped with Fe and Mn have high local magnetic moments, whereas Co-doped nanotubes have low values and Ni-doped nanotubes are mostly nonmagnetic. The infinite [Formula presented] nanotube is found to be ferromagnetic with nearly the same local magnetic moment on each Fe atom as in bulk iron. Mn-doped nanotubes are antiferromagnetic, but a ferrromagnetic state lies only 0.03 eV higher in energy with a gap in the majority spin bands near the Fermi energy. These materials are interesting for silicon-based spintronic devices and other nanoscale magnetic applications.

Original languageEnglish (US)
JournalPhysical Review Letters
Volume91
Issue number14
DOIs
StatePublished - Jan 1 2003

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nanotubes
transition metals
silicon
magnetic moments
atoms
iron
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Magnetism in transition-metal-doped silicon nanotubes. / Singh, Abhishek Kumar; Briere, Tina M.; Kumar, Vijay; Kawazoe, Yoshiyuki.

In: Physical Review Letters, Vol. 91, No. 14, 01.01.2003.

Research output: Contribution to journalArticle

Singh, Abhishek Kumar ; Briere, Tina M. ; Kumar, Vijay ; Kawazoe, Yoshiyuki. / Magnetism in transition-metal-doped silicon nanotubes. In: Physical Review Letters. 2003 ; Vol. 91, No. 14.
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