Metal encapsulated nanotubes of germanium with metal dependent electronic properties

Quantum Dots, Wires and Nanotubes


Using ab initio total energy calculations we demonstrate that the nanotubes of germanium with atomic structure based on an alternate prism and antiprism stacking of hexagonal rings, can be stabilized by metal encapsulation. The V or Nb doped infinite nanotube is metallic. However, Mo doping leads to the formation of a metal encapsulated direct band gap semiconducting nanotube of germanium. These nanotubes with metal dependent electronic properties could prove to be vital for the development of future nanotechnologies.


Spectroscopy Neural Network State Physics Hexagonal Total Energy 
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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Authors and Affiliations

  1. 1.Institute for Materials Research, Tohoku UniversitySendaiJapan
  2. 2.Dr. Vijay Kumar Foundation, 45 Bazaar Street, K. K. Nagar (West)ChennaiIndia

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