Finite-temperature full random-phase approximation model of band gap narrowing for silicon device simulation

1998 ◽  
Vol 84 (7) ◽  
pp. 3684-3695 ◽  
Author(s):  
Andreas Schenk
Keyword(s):  
Band Gap ◽  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Device Simulation ◽  
Phase Approximation ◽  
Approximation Model ◽  
Band Gap Narrowing ◽  
Silicon Device

Relativistic Random Phase Approximation At Finite Temperature

2009 ◽  
Author(s):  
Y. F. Niu ◽  
N. Paar ◽  
D. Vretenar ◽  
J. Meng ◽  
Matko Milin ◽  
...  
Keyword(s):  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation

Excitation spectrum of TTF-TCNQ: a finite temperature calculation

Open Physics ◽  
2013 ◽  
Vol 11 (1) ◽  
Author(s):  
Željana Lošić
Keyword(s):  
Excitation Spectrum ◽  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Organic Conductor ◽  
Zero Temperature ◽  
Good Qualitative Agreement ◽  
Temperature Dependent ◽  
Temperature Calculation

AbstractIn this paper we study the excitation spectrum of the organic conductor tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) using finite temperature calculations. The effect of electronelectron interaction is considered within the random phase approximation (RPA). Our results show the temperature dependent plasmon and dipolar mode corresponding qualitatively to the modes obtained previously using zero temperature formalism assigned to the observed excitations at 10 meV and 0.75 eV. These modes have an essential influence on the energy-loss function. The obtained results are in good qualitative agreement with the optical and EELS data of TTF-TCNQ.

THE MEISSNER EFFECT AND INFINITE CONDUCTIVITY IN ANYON SUPERCONDUCTOR AT FINITE TEMPERATURE

1990 ◽  
Vol 04 (16) ◽  
pp. 1023-1027 ◽  
Author(s):  
Y.C. KAO ◽  
M.F. YANG
Keyword(s):  
Response Function ◽  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Meissner Effect ◽  
Electromagnetic Response ◽  
Gauge Fields ◽  
Phase Approximation ◽  
Infinite Conductivity ◽  
Chern Simons

We study the conductivity tensor for the pure anyon system at finite temperature by calculating the electromagnetic response function Kμν(ω, k) in the random-phase approximation. We find that the conductivity is indeed infinite through the vanishing of the renormalized Chern-Simons term for the statistical gauge fields in the limit k=0, ω→0. To study the Meissner effect at finite temperature, others have looked at Kµν(ω, k) in the limit ω=0, k→0. We compare the results and make some comments.

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