EUROMAT '91: Proceedings of the Second European Conference on Advanced Material and Processes, eds. T. W. Clyne and P. J. Withers (Institute of Metals) 368-370 (1992)

Stability of the hypothetical superhard carbon metal H-6

M. I. Heggie, C. D. Latham

Department of Computer Science, University of Exeter, Exeter, EX4 4PT, UK

(Received July 1991)

Abstract

Novel carbon structures have been proposed that could be simultaneously strong and metallic.  One such structure could grow epitaxially on some diamond surfaces giving rise to an unusual metallic layer.  This paper illustrates how the instability of these structures might have been overlooked in the original calculations.  Using a semiclassical interatomic potential we show how doubling the unit cell can yield a more stable insulating structure for the first suggested structure and how the latest hexagonal structure, H-6, is not stable with respect to diamond.

Next: Introduction

Contents

[Abstract] [Introduction] [Computer Models] [Results] [Acknowledgement] [References] [Figure 1]

• Next abstract . . .
• Previous abstract . . .
• List of published work . . .
• About the Aimpro Group at Exeter . . .
• About the School of Physics . . .
• Index of publications by the Aimpro Group . . .