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[Chol-Jun Yu <yucj@ghi.rwth-aachen.de>]

Dear all,

I need to know how to perform the structural optimization of the non-cubic 
lattice crystals in ABINIT. For example, in tetragonal lattice we must 
determine the lattice constants a and c (or a and d=c/a). How can I determine 
these lattice parameters simultaneously?

Thank you very much in advance.

Yu, Chol-Jun.

Computational Materials Engineering(CME)
Center for Computational Engineering Science(CCES)
Institute of Mineral Engineering(GHI)
RWTH Aachen
Mauerstrasse 5
D-52064 Aachen, Germany
Tel: ++49 241 80 94969
Fax: ++49 241 80 92271
e-mail: yucj@ghi.rwth-aachen.de
homepage: http://www.ghi.rwth-aachen.de/www/