Berlin 2008 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 22: Transport: Poster Session
TT 22.43: Poster
Wednesday, February 27, 2008, 14:00–18:00, Poster B
Numerical Renormalization Group Calculation of Electronic Transport in the Anderson Holstein Model — •Falk May1, Maarten R.Wegewijs2, and Walter Hofstetter1 — 1Institut für Theoretische Physik, J. W. Goethe-Universität, D-60438 Frankfurt, Germany — 2Institut für Theoretische Physik, Lehrstuhl A, RWTH Aachen, D-52056 Aachen, Germany
Since their recent first realizations, molecular transistors attract more and more interest in nanoelectronics due to their rich transport properties. They consist of a molecule connecting two leads where a gate electrode can be used to tune the charge on the molecule. An important point in describing their transport behaviour is the understanding of electron-phonon interactions. We investigate these interactions using an Anderson Holstein Model [1,2] where a single impurity is linearily coupled to a harmonic osillator describing the vibrational degrees of freedom of the molecule. In our work we use the Numerical Renormalization Group [3] to calculate transport properties of the molecular transistor.
[1] P.W.Anderson, Phys. Rev. 124, 41 (1961)
[2] T.Holstein, Ann. Phys. 8, 325 (1995)
[3] K.Wilson, Rev. Mod. Phys. 47, 773 (1975)