1. Field-enhanced conductivity in Electron-Glasses
Suppression of Electron-Electron inelastic scattering in Anderson Insulators
disorder
Anderson insulator…
… Coulomb interactions x e
G(T=0)>0 Metal
G(T=0)=0 Insulator
= Electron-Glass

2. The basic phenomena …all experiments done at T=4K
…quench the sample from high T…
all samples are in the 2D hopping regime
…and all are crystalline indium-oxide - In2O3-x
…all experiments done at T=4K
…slow relaxation…
system goes towards lower energy
In2O3-x

3. …or raise bath-temperature by DT…
…more ways to get it out of equilibrium...
…apply non-ohmic field F…(high voltage)
…or raise bath-temperature by DT…
…F and DT have qualitatively similar effect …

4. … absorption measured via transport...
… absorption however, DOES depend on f...

5. … and it becomes small above some f...
DG0
DG0 is the same for all f
…and F is kept for the same time for all f
dGrel is NOT
…what determines the cross-over frequency ?

6. …it is the rate of heat removal…
T, DT
g(T) is the rate heat is removed from the system
Cel is the electron heat-capacity
N(0)=21045 J-1 m-3
g(6.1 MW) =3.5·105 Hz
g(12.5 MW) =7.1·105 Hz
V(6.1 MW) =0.3 V (rms)
V(12.5 MW) =1 V (rms)

7. …but what about e-e inelastic rate ?!
gin (e-e)R (for weak disorder)

8. …measuring the electron temperature…
gate
insulator
sample
…the “memory-Dip (MD )
…MD shape may be used as a thermometer...
…applied high frequency F...
…applied low frequency F...