Magnetism of single-walled carbon nanotube with Pd nanowire

Satoru Ohno, Yojiro Oba, Shin Yabuuchi, Tetsuya Sato, Hiroyuki Kageshima

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Magnetism of single-walled carbon nanotubes (SWNTs) filled with Pd in pseudo one-dimension is investigated based on the electronic structure obtained using the first-principle calculation. In addition, the stability of Pd nanowire inside SWNT is evaluated through the calculation of binding energy. The Pd monostrand nanowire with the inter-atomic distance of 2.49 Å, which shows ferromagnetism in the free-standing state, has the ferromagnetic moment also in the armchair type SWNTs with the diameter lager than 6.9 Å although the magnetic moment is smaller than that of the corresponding free-standing Pd nanowire. The pseudo one-dimensional fcc Pd nanowire with the cross section of the (111) plane in the (14, 0) SWNT has ferromagnetic moment, where the inter-atomic distance is elongated by 28% along the longitudinal axis of SWNT compared with the equilibrium distance, so as to adjust the unit cell size of SWNT. However, the Pd(100) nanowire in (8, 8) SWNT does not show ferromagnetism although it has almost the same inter-atomic distance as that of the (111) nanowire in (14, 0) SWNT. This can be interpreted by means of the magnetism of planar Pd clusters whose laminating composes the nanowire.

本文言語English
論文番号104713
ジャーナルJournal of the Physical Society of Japan
77
10
DOI
出版ステータスPublished - 2008 10

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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