Scientific Computing Seminar

Date:

Friday, August 12, 2005

Time:

1:00pm-2:00pm

Location:

50A-5132

Seminar Speaker:

Eric Darve
Mechanical Engineering Department
Stanford University
http://www.stanford.edu/~darve/

Title:

Calculating Transport Properties of Nanodevices

Abstract:

The Non Equilibrium Green's Function (NEGF) method is a powerful technique to compute quantum transport properties of nanoscale electronic devices. It is applicable to a wide range of devices, ranging from nano transistors, molecular switches, to nano wires and nanotubes. Accurately simulating such devices often requires a 2D or a full 3D model. This leads to a large computational expense. We review existing methods for the fast computation of the density of charge using the Schrodinger-Poisson equation, and propose a new algorithm which has a significantly lower computational cost and is exact (in the absence of computer roundoff errors). The algorithm is applicable in the presence of various boundary conditions for the source, drain and gate regions, and for devices of arbitrary geometry.

Sponsor of Seminar:

Esmond Ng

Scientific Computing

Contact Esmond G. Ng EGNg@lbl.gov