Effect of phonon self-energy correction on hot-electron relaxation in two-dimensional semiconductor systems

1988 ◽  
Vol 37 (9) ◽  
pp. 4560-4566 ◽  
Author(s):  
S. Das Sarma ◽  
J. K. Jain ◽  
R. Jalabert
Keyword(s):  
Two Dimensional ◽  
Hot Electron ◽  
Energy Correction ◽  
Self Energy ◽  
Electron Relaxation

Hot Electron Relaxation in Quantum Wells

1986 ◽  
Vol 77 ◽  
Author(s):  
S. A. Lyon
Keyword(s):  
Crystal Growth ◽  
Steady State ◽  
Quantum Wells ◽  
Hot Electrons ◽  
Two Dimensional ◽  
Hot Electron ◽  
Carrier Distribution ◽  
Bulk Gaas ◽  
Bulk Semiconductors ◽  
Electron Relaxation

ABSTRACTHot electron relaxation in bulk semiconductors has been studied for several decades, but only through recent advances in crystal growth has it become possible to investigate the ther-malization of hot quasi-two-dimensional carriers in quantum wells. These same advances have opened the possibility of constructing various semiconductor devices which rely on hot electrons for their operation. We discuss experimental results on the energy relaxation of hot electrons in GaAs/AlGaAs quantum wells. The experiments make use of optical spectroscopy for determining the carrier distribution. In particular, steady-state hot photoluminescence measurements have been employed with modulation-doped quantum wells in order to minimally perturb the system by the photoexcited carriers. Both the relaxation of very energetic electrons and the cooling of a hot thermalized carrier distribution are considered. The quantum well results are compared to results from similar experiments with bulk GaAs.

New Pathway for Hot Electron Relaxation in Two-Dimensional Heterostructures

Nano Letters ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 6057-6063 ◽  
Author(s):  
Jin Zhang ◽  
Hao Hong ◽  
Jia Zhang ◽  
Huixia Fu ◽  
Peiwei You ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Hot Electron ◽  
Electron Relaxation

scholarly journals Hot-Electron Effects in Two-Dimensional Hopping with a Large Localization Length

2000 ◽  
Vol 85 (8) ◽  
pp. 1718-1721 ◽  
Author(s):  
M. E. Gershenson ◽  
Yu. B. Khavin ◽  
D. Reuter ◽  
P. Schafmeister ◽  
A. D. Wieck
Keyword(s):  
Localization Length ◽  
Two Dimensional ◽  
Hot Electron ◽  
Electron Effects

scholarly journals Vertex Corrections in Gauge Theories for Two-dimensional Condensed Matter Systems

1998 ◽  
Vol 12 (16n17) ◽  
pp. 1673-1692 ◽  
Author(s):  
Peter Kopietz
Keyword(s):  
Gauge Field ◽  
Condensed Matter ◽  
Finite Energy ◽  
Energy Scale ◽  
Gauge Fields ◽  
Logarithmic Correction ◽  
Two Dimensional ◽  
Numerical Constant ◽  
Self Energy ◽  
Vertex Corrections

We calculate the self-energy of two-dimensional fermions that are coupled to transverse gauge fields, taking two-loop corrections into account. Given a bare gauge field propagator that diverges for small momentum transfers q as 1/qη, 1<η≤ 2, the fermionic self-energy without vertex corrections vanishes for small frequencies ω as Σ(ω)∝ ωγ with γ=2/(1+η)<1. We show that inclusion of the leading radiative correction to the fermion-gauge field vertex leads to Σ(ω)∝ωγ [1-aη ln (ω0/ω)], where aη is a positive numerical constant and ω0 is some finite energy scale. The negative logarithmic correction is consistent with the scenario that higher order vertex corrections push the exponent γ to larger values.

HOT ELECTRON RELAXATION IN POLAR SEMICONDUCTORS

1988 ◽  
pp. 695-700
Author(s):  
S. Das Sarma ◽  
J.K. Jain ◽  
R. Jalabert
Keyword(s):  
Hot Electron ◽  
Electron Relaxation

Two-dimensional FeS2-encapsulated Au: a quasi-epitaxial heterojunction for synergistic catalytic activity under photoelectrocatalytic water reduction

2019 ◽  
Vol 7 (33) ◽  
pp. 19258-19268 ◽  
Author(s):  
Indranil Mondal ◽  
Song Yi Moon ◽  
Hyunhwa Lee ◽  
Heeyoung Kim ◽  
Jeong Young Park
Keyword(s):  
Electron Transfer ◽  
Catalytic Activity ◽  
Structural Organization ◽  
Two Dimensional ◽  
Hot Electron ◽  
Water Reduction ◽  
Hot Electron Transfer

Optimization of structural organization between metal and semiconductor electrocatalyst reveals the hot role of quasi-epitaxial heterojunction in hot electron transfer for synergistic photocatalysis.

Sign in / Sign up

Export Citation Format

Share Document