scholarly journals Interplay between collective modes in hybrid electron-gas–superconductor structures

2020 ◽  
Vol 101 (16) ◽  
Author(s):  
M. V. Boev ◽  
I. G. Savenko ◽  
V. M. Kovalev
Keyword(s):  
Electron Gas ◽  
Collective Modes

Individual and Collective Aspects of the Microfield Distribution

1971 ◽  
Vol 26 (8) ◽  
pp. 1360-1365
Author(s):  
Günter H. ◽  
Klaus G. Fischer
Keyword(s):  
High Frequency ◽  
Individual Component ◽  
Plasma Parameter ◽  
Electron Gas ◽  
Critical Density ◽  
Collective Modes ◽  
Exact Formulation ◽  
Collective Phenomena ◽  
Frequency Profile ◽  
The Individual

Starting from the exact formulation of the electric microfield distribution in an electron gas the question is investigated of whether collective phenomena are correctly included in previous calculations. Application of Böhm and Pines' procedure yields a separable expression for the total microfield distribution: the collective component is represented by a Gaussian distribution, the individual component is similar to the high-frequency profile of Baranger and Mozer. Both components vary with the cut-off parameter of the spectrum of the collective modes. For realistic values of this cut-off parameter the total distribution may differ from the high-frequency profile as much as ten per cent for systems close to the critical density. With increasing plasma parameter Λ the distribution approaches that of Holtsmark

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