Formation of Metal-Encapsulating Si Cage Clusters

Hidefumi Hiura, Takehide Miyazaki, and Toshihiko Kanayama
Phys. Rev. Lett. 86, 1733 – Published 26 February 2001
PDFExport Citation


We report the formation of a series of metal-containing hydrogenated silicon clusters using an ion trap. Mass analyses reveal that many types of transition metal ions M+ ( M=Hf, Ta, W, Re, Ir, etc.) react with silane (SiH4) to form dehydrogenated MSin+ cluster ions ( n=14, 13, 12, 11, 9, respectively) as an end product, indicating that the metal atom is endohedral and stabilizes the Si polyhedral cage. This finding is confirmed by our ab initio calculation that WSi12 is a W-encapsulating Si12 cage cluster, and is very stable owing to both the electronic and the geometrical shell closures.

  • Received 5 September 2000


©2001 American Physical Society

Authors & Affiliations

Hidefumi Hiura1,*, Takehide Miyazaki2, and Toshihiko Kanayama3

  • 1Joint Research Center for Atom Technology (JRCAT)-Angstrom Technology Partnership, Tsukuba 305-0046, Japan
  • 2Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba 305-8568, Japan
  • 3JRCAT-National Institute for Advanced Interdisciplinary Research, 1-1-4 Higashi, Tsukuba 305-8562, Japan

  • *Present address: Fundamental Research Laboratories, NEC Corporation, Tsukuba 305-8501, Japan. Electronic address:

References (Subscription Required)

Click to Expand

Vol. 86, Iss. 9 — 26 February 2001

Reuse & Permissions
Access Options
Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

APS and CERN Sign Open Access Agreement for SCOAP3

APS and CERN, the host organization of SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics), have signed an agreement to make the high-energy physics (HEP) articles published in three leading APS journals open access beginning January 1, 2018. This agreement acts to support the publishing of open access content for wider benefit of the HEP community.

Authorization Required




Sign up to receive regular email alerts from Physical Review Letters

Log In



Article Lookup

Paste a citation or DOI

Enter a citation