What Are the Average Tunneling Electron Energies in a Ti/Nb2O5/Ti MIM Device?

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SUMMARY

The average tunneling electron energies in a Ti/Nb2O5/Ti metal-insulator-metal (MIM) device at room temperature (300K) are discussed, focusing on a reported barrier height of 0.0 eV. The electron affinity of Nb2O5 is noted as 4 eV, while the work function of titanium (Ti) is also 4 eV. Participants in the discussion suggest potential tunneling energies, estimating values around 0.0157 eV and 4 eV, while acknowledging the uncertainty in precise measurements.

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  • Understanding of MIM device structures
  • Knowledge of tunneling phenomena in quantum physics
  • Familiarity with barrier height measurements
  • Basic concepts of electron affinity and work function
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  • Explore methods for measuring barrier heights in MIM devices
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Quantum physicists, materials scientists, and electrical engineers interested in the properties and performance of MIM devices, particularly in the context of tunneling electron behavior.

PhilQ
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If we have a MIM device of Ti/Nb2O5/Ti at room temperature (300K), with a measured barrier height(s) of 0.0eV, the insulator thickness is say 2nm, and let's call the electron affinity of Nb2O5 4eV, and the Work function of Ti 4eV (for the sake of a simplified question), what is the average / typical energies of electrons that tunnel through the insulator?

I am guessing there will be some wildly different answers.
 
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Thanks Peter, sorry about that.
 
PhilQ said:
with a measured barrier height(s) of 0.0eV

How did you "measure" a barrier height of 0.0 eV?
 
Is there a formula you could apply?
 
Lord Jestocost said:
How did you "measure" a barrier height of 0.0 eV?

I didn't but it is reported, not really the gist of the question though. Ti/Nb2O5/Ti has a close to zero total barrier height as measured by others.

I am coaxing for people to have a stab at the tunnelling electron energy, not expecting a precise answer but rather something like;

A. approx 0.0157eV
B. approx 4eV
C. definitely no idea

and then some sort of justification if A or B

This might look like 3 card monte, but it is serious.
 
What is the energy of the incident electrons?
 

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