Resonant tunneling and hopping through a series of localized states in a two-dimensional electron gas

1991 ◽  
Vol 67 (20) ◽  
pp. 2870-2873 ◽  
Author(s):  
Dragana Popović ◽  
A. Fowler ◽  
S. Washburn
Keyword(s):  
Resonant Tunneling ◽  
Electron Gas ◽  
Localized States ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Dimensional Electron Gas

scholarly journals Interaction between Adatom-induced Localized States and Quasi-two-dimensional Electron Gas

Hyomen Kagaku ◽  
2006 ◽  
Vol 27 (12) ◽  
pp. 702-707
Author(s):  
Canhua LIU ◽  
Iwao MATSUDA ◽  
Rei HOBARA ◽  
Shuji HASEGAWA
Keyword(s):  
Electron Gas ◽  
Localized States ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Dimensional Electron Gas

CONDUCTANCE FLUCTUATIONS IN A TWO-DIMENSIONAL ELECTRON GAS IN THE TUNNELING AND HOPPING REGIMES

1994 ◽  
Vol 08 (07) ◽  
pp. 809-817 ◽  
Author(s):  
DRAGANA POPOVIĆ ◽  
S. WASHBURN ◽  
A.B. FOWLER
Keyword(s):  
Chemical Potential ◽  
Electron Gas ◽  
Localized States ◽  
Sample Length ◽  
Complex Behavior ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Conductance Fluctuations ◽  
Dimensional Electron Gas

We report results of low temperature conductance measurements made on a wide two-dimensional electron gas as a function of sample length L and temperature, in a regime where conduction proceeds via tunneling or hopping through channels of localized states. We extend our recent study of the behavior of the ensemble averaged logarithm of conductance <ln G> and focus on fluctuations of conductance as a function of the chemical potential μ, which occur on at least three characteristic gate voltage scales VC. A detailed study of VC and variance vs. L and T for those three types of fluctuations reveals a complex behavior, probably caused by several competing effects. Our results suggest that both disorder and electron-electron interactions have to be taken into account to describe the properties of our samples.

Sign in / Sign up

Export Citation Format

Share Document