Ferromagnetism and piezomagnetic behavior in Mn-doped germanium nanotubes

Abhishek Kumar Singh, Vijay Kumar, Yoshiyuki Kawazoe

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number233406
Pages (from-to)233406-1-233406-4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number23
DOIs
Publication statusPublished - 2004 Jun 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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