no. 1
On a variational problem arising in crystallography
ESAIM: Control, Optimisation and Calculus of Variations, Tome 13 (2007) no. 1, pp. 72-92.

We study a variational problem which was introduced by Hannon, Marcus and Mizel [ESAIM: COCV 9 (2003) 145-149] to describe step-terraces on surfaces of so-called “unorthodox” crystals. We show that there is no nondegenerate intervals on which the absolute value of a minimizer is π/2 identically.

DOI : 10.1051/cocv:2007003
Classification : 49J99, 74E15
Mots clés : minimizer, surfaces of crystals, unorthodox crystal, variational problem 
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     title = {On a variational problem arising in crystallography},
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     pages = {72--92},
     publisher = {EDP-Sciences},
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     mrnumber = {2282102},
     zbl = {1136.49012},
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Zaslavski, Alexander J. On a variational problem arising in crystallography. ESAIM: Control, Optimisation and Calculus of Variations, Tome 13 (2007) no. 1, pp. 72-92. doi : 10.1051/cocv:2007003. http://www.numdam.org/articles/10.1051/cocv:2007003/

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