Quantum dynamics of large polyatomic systems using a classically based separable potential method

1995 ◽  
Vol 102 (15) ◽  
pp. 6046-6056 ◽  
Author(s):  
Pavel Jungwirth ◽  
R. Benny Gerber
Keyword(s):  
Quantum Dynamics ◽  
Potential Method ◽  
Separable Potential ◽  
Polyatomic Systems

Quantum dynamics of kinematic invariants in tetra- and polyatomic systems

1999 ◽  
Vol 1 (6) ◽  
pp. 1259-1264 ◽  
Author(s):  
Robert G. Littlejohn ◽  
Kevin A. Mitchell ◽  
Vincenzo Aquilanti
Keyword(s):  
Quantum Dynamics ◽  
Polyatomic Systems

Quantum dynamics of large polyatomic systems using classical separable potentials

1997 ◽  
Vol 21 (6) ◽  
pp. 419-429 ◽  
Author(s):  
Pavel Jungwirth ◽  
Erick Fredj ◽  
Petra Ždánská ◽  
R.Benny Gerber
Keyword(s):  
Quantum Dynamics ◽  
Separable Potentials ◽  
Polyatomic Systems

Modulated structures in (Bi,Pb)-Sr-Ca-Cu-O films

1990 ◽  
Vol 48 (4) ◽  
pp. 62-63
Author(s):  
Shozo Ikeda ◽  
Hirotoshi Hayakawa ◽  
Daniel R. Dietderich
Keyword(s):  
Rf Magnetron Sputtering ◽  
Potential Method ◽  
High Tc ◽  
Bscco System ◽  
Heat Treated ◽  
Modulated Structures ◽  
High Tc Phase ◽  
Deposited Films ◽  
Sputtering System

Pb addition makes easier to form the high Tc phase in the BSCCO system. However, Pb easily vaporized at high temperature. A controlled Pb potential method has been applied to grow the high Tc phase in films. Initially, films are deposited on cleaved MgO substrates using an rf magnetron sputtering system. These amorphous as-deposited films are heat treated in a sealed gold capsule along with a large pellet of Pb-added BSCCO. Details of the process and characterization of the films have been reported elsewhere (1). Films trated for 0.5h at 850° C contain mainly the low Tc phase with a small amount of the high Tc phase. Hawever, films treated for 3h at 850°C consist mainly of the high Tc phase. This film is superconductive with a Tc(zero) of 106K. The Pb/Bi ratio of the films, analysed by SEM- EDS, are 0.12 and 0.18 for heat tratment times of 0.5 and 3h, respectively. The present study investigates the modulated structures of these films using HREM.

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