NTT Basic Research Laboratories

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Multidisciplinary Materials Design and Science Laboratory
Advanced Applied Physical Science Laboratory
Quantum Science and Technology Laboratory
Nanophotonics Center
Research Center for Theoretical Quantum Physics
October 26, 1998

Novel single crystal silicon

We have succeeded in growing a novel type of single crystal silicon. Silicon has a diamond structure in nature, but in this crystal the crystallographic orientation is reversed periodically. In order to grow the crystal, it is essential that surface structure be precisely controlled and crystallographic orientation be monitored. In general, physical properties of crystals depend on their crystalline structure. The growth of this novel single crystal silicon will make it possible to form heterojunctions from silicon alone.

=> Low-Dimensional Nanomaterials Research Group