Ferromagnetism and piezomagnetic behavior in Mn-doped germanium nanotubes

Abhishek Kumar Singh, Vijay Kumar, Yoshiyuki Kawazoe

研究成果: Article査読

22 被引用数 (Scopus)

抄録

Using ab initio density functional calculations, we show that pentagonal and hexagonal nanotubes of Ge can be stabilized in the antiprism structure by doping with Mn atoms. In both cases the infinite nanotubes are metallic and ferromagnetic. Hexagonal nanotubes have the highest average magnetic moments of 3.06 μB per Mn atom found so far in metal doped nanotubes of semiconductors, while the pentagonal nanotubes show a transition from a ferromagnetic to a ferrimagnetic state upon compression with an abrupt change in the magnetic moments, leading to the possibility of these nanotubes to act as a nano-piezomagnet.

本文言語English
論文番号233406
ページ(範囲)233406-1-233406-4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
69
23
DOI
出版ステータスPublished - 2004 6 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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