Solution of constrained hartree-fock and hartree-fock-bogolubov equations by a direct energy minimization method

1983 ◽  
Vol 73 (1) ◽  
pp. 45-53
Author(s):  
G. Giberti ◽  
R. Tommaso
Keyword(s):  
Energy Minimization ◽  
Minimization Method ◽  
Hartree Fock ◽  
Direct Energy Minimization ◽  
Direct Energy ◽  
Energy Minimization Method

Extraction of the Coefficient of Thermal Expansion of Thin Films from Buckled Membranes

1998 ◽  
Vol 546 ◽  
Author(s):  
V. Ziebartl ◽  
O. Paul ◽  
H. Baltes
Keyword(s):  
Thin Films ◽  
Finite Element ◽  
Thermal Expansion ◽  
Silicon Nitride ◽  
Excellent Agreement ◽  
Energy Minimization ◽  
Coefficient Of Thermal Expansion ◽  
Temperature Dependent ◽  
Minimization Method ◽  
Energy Minimization Method

AbstractWe report a new method to measure the temperature-dependent coefficient of thermal expansion α(T) of thin films. The method exploits the temperature dependent buckling of clamped square plates. This buckling was investigated numerically using an energy minimization method and finite element simulations. Both approaches show excellent agreement even far away from simple critical buckling. The numerical results were used to extract Cα(T) = α0+α1(T−T0 ) of PECVD silicon nitride between 20° and 140°C with α0 = (1.803±0.006)×10−6°C−1, α1 = (7.5±0.5)×10−9 °C−2, and T0 = 25°C.

Direct energy minimization of excited singlet states

1981 ◽  
Vol 75 (12) ◽  
pp. 5759-5763 ◽  
Author(s):  
Luc Bouscasse ◽  
Danielle Bouin‐Roubaud ◽  
Thierry Avignon ◽  
H. H. Jaffé
Keyword(s):  
Energy Minimization ◽  
Excited Singlet ◽  
Singlet States ◽  
Direct Energy Minimization ◽  
Direct Energy ◽  
Excited Singlet States
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