J. Phys. IV France
Volume 131, December 2005
Page(s) 289 - 294
Publié en ligne 18 janvier 2006
International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 289-294

DOI: 10.1051/jp4:2005131074

Topological crystals

S. Tanda, T. Tsuneta, T. Toshima, T. Matsuura and M. Tsubota

Department of Applied Physics, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan

We report the discovery of a Möbius crystal of NbSe3, conventionally grown as ribbons and whiskers. We also reveal their formation mechanisms of which two crucial components are the spherical selenium (Se) droplet, which a NbSe3 fiber wraps around due to surface tension, and the monoclinic (P21/m) crystal symmetry inherent in NbSe3, which induces a twist in the strip when bent. Our crystals provide a non-fictitious Möbius world governed by a non-trivial real-space topology.

© EDP Sciences 2005