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260 Appendix D. Site Reports—Japan
with five movable targets and a fixed laser is being used for this work, and
the studies are carried out as a function of substrate temperature and oxygen
partial pressure.
Finally, the WTEC team visited the Terakura theory group, led by Dr.
Kiyoyuki Terakura, who has been at JRCAT for about three and a half years.
This world-class theory group specializes in first-principles, state-of-the-art
quantum simulations of atomic and molecular processes in the areas of
semiconductor surfaces, transition metal compounds, and exotic materials
such as conducting organic solids (e.g., DCNQI-M, with M = Li, Ag, Cu).
The group also develops new computational methodologies for approaching
such problems and is responsible for the large-scale supercomputer system at
JRCAT, consisting of two main computers—a vector-parallel computer
(VPP500/32) and a massively parallel computer (128 node CM-5E). The
theory group has good interactions with the experimental efforts at JRCAT;
although frequently the experimentally investigated systems can be rather
complex for fundamental theoretical simulation, serious theoretical efforts
are made to benefit the experimental program. The Terakura group also has
extensive external collaborations with NEC, Hitachi, Fujitsu, and various
universities in Japan and abroad. In addition to its normal publications, the
theory group disseminates the results of its efforts in a series of wellprepared
annual reports.