Lecture 12

Lecture 12 - David K Ferry Regents Professor Arizona State...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
EEE 434 Quantum Mechanics http://www.eas.asu.edu/~ferry/EEE434.htm L12:1 EEE 434/591—Quantum Mechanics David K. Ferry Regents’ Professor Arizona State University MIT Lincoln Laboratory
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EEE 434 Quantum Mechanics http://www.eas.asu.edu/~ferry/EEE434.htm L12:2 Tunneling Devices Now that we have developed the WKB approximation to the tunneling probability we can return to a discussion of the tunneling devices and can calculate the shape of the current-voltage characteristic. There are primarily two tunneling devices we need to consider: 1. The resonant tunneling diode, and 2. The heavily degenerate p-n junction where tunneling can occur; the Esaki diode
Background image of page 2
EEE 434 Quantum Mechanics http://www.eas.asu.edu/~ferry/EEE434.htm L12:3 Tunneling Devices p-n junction tunnel diode Resonant tunneling diode Heavily doped p-n junction developed by Leo Esaki Shared Nobel prize for tunneling Conceived by Esaki at IBM Made practical by group at Lincoln Laboratory E F GaAs AlGaAs
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EEE 434 Quantum Mechanics http://www.eas.asu.edu/~ferry/EEE434.htm L12:4 E F Forward bias: V I
Background image of page 4
EEE 434 Quantum Mechanics http://www.eas.asu.edu/~ferry/EEE434.htm L12:5 GaAs AlGaAs E F V I Resonant Tunneling Diode
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EEE 434 Quantum Mechanics http://www.eas.asu.edu/~ferry/EEE434.htm L12:6 E F,R E F,L eV a Filled states k k 1 The momentum on the two sides (in the z -direction) is given by and the velocity is related via
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/03/2010 for the course EEE 434 taught by Professor Roedel during the Fall '08 term at ASU.

Page1 / 28

Lecture 12 - David K Ferry Regents Professor Arizona State...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online