495_HW1 - 8/29/06 ECE 495W, Fall06 MSEE B010, MWF 330P 420P...

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8/29/06 ECE 495W, Fall’06 MSEE B010, MWF 330P – 420P Fundamentals of Nanoelectronics HW#1: Due Friday Sept.8 in class. All exercises, page numbers refer to S.Datta, Quantum Transport: Atom to Transistor, Cambridge (2005) ISBN 0-521-63145-9. Please turn in a copy of your MATLAB code for Problem 3. You can use the MATLAB code at the end of the text as a guide, but the code you turn in should be your own work, not copied from the text. Problem 1: μ 1000 K 300 K Density of states --> 0 5 10 15 20 25 30 -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 0.2 A channel having a density of states as shown is connected to two contacts with the same electrochemical potential μ, but held at two different temperatures as shown. Is there a current in the external circuit if μ is positioned below the peak of the density of states D(E) as shown ? If so, is it in the direction shown (from the hot to the cold contact) or opposite to the direction shown (from the cold to the hot contact)? Explain your reasoning.
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495_HW1 - 8/29/06 ECE 495W, Fall06 MSEE B010, MWF 330P 420P...

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